Which mechanism has the least effect on natural selection over time?

Answers

Answer 1

Answer:

chromosome number.

Explanation:


Related Questions

the urinary problem caused by interference with the normal nerve pathways associated with urination known as

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The urinary problem caused by interference with the normal nerve pathways associated with urination known as neurogenic bladder.

Neurogenic bladder is a urinary problem caused by interference with the normal nerve pathways associated with urination. It is a condition wherein the nerves connected to the bladder do not function properly, which leads to difficulty in controlling the bladder and emptying it properly. This can lead to a wide range of symptoms, including difficulty in starting urination, an inability to empty the bladder fully, incontinence, and urinary tract infections.

The primary cause of neurogenic bladder is usually damage to the nerves that control the bladder. This can be due to a variety of conditions, including traumatic brain or spinal cord injuries, multiple sclerosis, Parkinson’s disease, stroke, and diabetes. In some cases, the underlying cause is unknown.

The symptoms of neurogenic bladder are usually the result of an inability to control the flow of urine. This can lead to an overactive bladder, which can cause frequent urges to urinate, even when the bladder is not full. In some cases, the inability to completely empty the bladder can lead to urinary retention, which can cause urinary tract infections. In addition, the condition can also cause incontinence, or the inability to control the flow of urine.

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Can chronic diseases be treated?

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Surgery, physiotherapy, psychotherapy, and radiation therapy are just some of the options available for treating chronic diseases.

In most cases, chronic diseases can be managed, but not cured, over the long term. In addition to dealing with acute health problems and complications that can shorten life expectancy, people with chronic illnesses frequently deal with daily symptom management that negatively impacts their quality of life.

Medication, however, is a common treatment option. Medication costs are a major part of health care spending in Australia and other developed countries, accounting for 13% of the total in 200607.4 In 2008, 4 billion prescriptions were filled, and many of these were for long-term conditions. Prevention and management of chronic diseases, especially when multiple medications are required, can be taxing.

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The rough endoplasmic reticulum is a cell structure that cnssits of folded membraes that contain ribosomes. What is the advantage of the folded membranes

Answers

The correct option is B The inner membrane is folded to generate cristae to improve the mitochondrion's capacity to manufacture ATP.

These folds allow substantially more electron transport chain enzymes and ATP synthase to be packed inside the mitochondrion.

he membrane. The more the folds the more the surface area to which more ribosomes can attach. The ribosomes are organelles responsible for the manufacture of protein in cells. Thereafter, the proteins are properly folded by the mediation of chaperones in the lumen of the RER.

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Full Question ;

The rough endoplasmic reticulum is a cell structure that consists of folded membranes that contain ribosomes. What is the advantage of the folded membranes?

A) decreases surface area in order to produce more Proteins

B) increases surface area in order to produce more proteins

C) increases volume of endoplasmic reticulum in order to produce more energy

D) decreases volume of the endoplasmic reticulum in order to make more energy

Which of the following is an example of a predator adaptation?



a porcupine's quills


a shark's powerful jaws


a plant's poisonous chemicals


a frog's bright colors

Answers

I think it’s a frogs bright colors

Which of the following expalins why folate is critical to the health of a newly conceived embryo?
A. Folate is essential for heart function
B. Folate is essential for maintaining prioper fluid balance
C. Folate is needed for spinal cord formation
D. Folate regulates bone formation

Answers

Answer:

I believe the answer is D. Folate regulates bone formation.

Explanation:

Hope it helps:)

What is the genetic inheritance pattern of a calico cat?

Answers

Because the genetic determination of coat color in calico cats is linked to the X chromosome, calico cats are almost always female, with one color associated with the maternal X chromosome and the other. is associated with the paternal X chromosome.

The calico cat displays a mixed color of red and black, depending on which of her two X chromosomes is inactivated. The allele that codes for orange hair color is dominant, while the black color allele is recessive. Out of 3,000 calico cats born, only one is male. If the male cat is a calico cat (calico), it means she has two X chromosomes and she has one Y chromosome. This is a chromosomal mutation recognized as XX male syndrome.

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write a plan to investigate the effect of temperature on the rate of digestion of starch by the enzyme amylase
your plan should include:
•a hypothesis
•selection, and justification of equipment, techniques or standard procedures
•health and safety associated with the investigation
•a step-by-step method for data collection and analysis to test the hypothesis including:
-quantities to be measured
-number and range of measurements to be taken
- how equipment may be used
-control variables
-brief method for data collection analysis
(12 marks)

Answers

Here is a possible plan for investigating the effect of temperature on the rate of digestion of starch by the enzyme amylase:

Hypothesis: Increasing the temperature will increase the rate of digestion of starch by the enzyme amylase.

Equipment and techniques:

1. Microscope and microscope slides

2. Hot plate or incubator to control temperature

3. Stopwatch or timer

4. Starch solution

5. Amylase enzyme solution

6. Water bath to maintain temperature

Justification: The microscope and microscope slides will be used to observe the digestion of starch by amylase. The hot plate or incubator will be used to control the temperature of the reaction. The stopwatch or timer will be used to measure the time required for the starch to be digested. The starch solution and amylase enzyme solution will be used to carry out the reaction. The water bath will be used to maintain the temperature of the reaction.

Health and safety:

1. Wear protective goggles to protect the eyes from splashes

2. Handle the solutions and enzymes carefully to avoid spills or splashes

3. Follow proper laboratory safety guidelines, such as not eating or drinking in the lab

Step-by-step method for data collection and analysis:

1. Set up the microscope and prepare the microscope slides.

2. Prepare several starch solutions with different temperatures, using the hot plate or incubator to control the temperature.

3. Add a drop of amylase enzyme solution to each starch solution.

4. Place the slides under the microscope and start the timer.

5. Observe the digestion of the starch at regular intervals, using the stopwatch or timer to measure the time required for the starch to be digested.

5. Record the time required for the starch to be digested at each temperature.

6. Repeat the experiment several times to obtain a reliable average.

7. Plot the data on a graph, with temperature on the x-axis and time required for starch digestion on the y-axis.

8. Analyze the data to determine the effect of temperature on the rate of starch digestion.

Control variables:

1. The concentration of the starch solution should be kept constant.

2. The concentration of the amylase enzyme solution should be kept constant.

3. The pH of the solutions should be kept constant.

4. The volume of the solutions should be kept constant.

Brief method for data collection and analysis:

1. Collect data by observing the digestion of starch at different temperatures and recording the time required for the starch to be digested.

2. Plot the data on a graph and analyze the trend to determine the effect of temperature on the rate of starch digestion.

3. Compare the results with the hypothesis to determine whether the hypothesis is supported or not.

Why is permeable soil best for plants?

Answers

Without sufficient Soil permeability, plants drown, suffocate, dehydrate, and starve. Healthy soil consists of sand, loam, and clay of varying sizes. The area between these bits are labeled macropores and micropores, depending on their size.

Soil permeability, the property of soil that allows water and air to pass through, is one of the most important properties to consider for fish farming. A pond built on impermeable soil loses little water to leach out. The more permeable the soil, the greater the penetration.

Soil permeability is important for proper plant growth and development and helps plants absorb minerals and sugars. Poor soil permeability also results in mud and stagnant water.

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In the biosphere, prey represent a food source for predators. An increase in the population of prey means more food for predators, which will

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An increase in the population of prey means more food for predators, which will increase the predators' population.

A predator is an organism which gets its food from the host after killing. It does not live in constant association with the host and this is known as predation.

The population of predator is directly proportional to prey but the population of prey is inversely proportional to a predators population.

As the prey population increases, there is more food for predators. So, after a slight lag, the predator population increases as well. As the number of predators increases, more prey are captured. As a result, the prey population starts to decrease.

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How does cyanide cause cell injury?

Answers

Answer:

It prevents the cells from using oxygen. And because of this cells die.

Explanation:

Researchers put mice who had been eating either a Low Carb or a Control diet onto treadmills at different speeds and measured heart rate. Their data are below. The R2 values for each line represent • Control O Low carb diet - Control -----Low carb
(Pict. Diagram)
o the significance of the linear fit o whether or not the slopes are significantly different from zero o the amount of variation explained by the regression line o standard deviation of the slope

Answers

Based on the research given, the answer would be C. the amount of variation explained by the regression line

This statistic displays the percentage of the variance in the dependent variable that the independent factors collectively explain. The R-squared statistic offers a simple 0–100% scale to express the degree of the relationship between your model and the dependent variable.

Variation refers to any distinction between individuals within a species or between populations of animals from different species. Genetic diversity is primarily brought about by mutation, but it is also influenced by other biological processes as sexual reproduction and gene flow. Linear regression is a linear strategy for modelling the connection between a scalar answer and one or more explanatory factors. When there is only one explanatory variable, simple linear regression is employed; when there are many explanatory factors, multiple linear regression is utilised.

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the leaf-like structure that protects a developing flower bud until it opens as a fully formed flower is called a what​

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Sepals is a leaf-like structure that protects a developing flower bud until it opens as a fully formed flower.

What is a Sepal?

A sepal is a part of the flower that is typically located at the base of the petals. Sepals form a protective layer around the bud and are usually green in color. They are typically small and leaf-like and provide support and protection for the flower. Sepals can also be used to identify different species of flowers.

They are usually found in pairs or in a whorl of four or five, and they help to protect the delicate petals and reproductive organs at the center of the flower. They also support the flower and keep it upright. Sepals open up as the flower blooms, allowing the petals to open and the reproductive organs to be exposed.

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identify a factor that affects the likelihood of a mudslide

Answers

Answer:

Volcanic eruptions, there are more but that is all that I know

Eating plenty of low-iron foods can help cure and prevent anemia. this is true or false ? Science homework:0

Answers

Answer:  True !

Explanation: Diets high in red meat, dark leafy vegetables, dried fruits and nuts, iron-fortified cereals, or bread can help treat or prevent iron deficiency.

To cause cancer, proto-oncogenes require __________ allele(s) to be mutated and therefore are considered ____________________ . The mutation results in a _________ of function. Normally, tumor suppressor genes inhibit the cell cycle. How do mutated tumor suppressor genes affect the cell cycle

Answers

Proto-oncogenes are rates that regularly aid cells to grow and split to create new cells or to assist cells with remaining alive. At the point when a proto-oncogene transforms (changes) or there are an excessive number of duplicates of it.

The two duplicates of a particular cancer silencer quality pair should be transformed to prompt an adjustment of cell development and growth arrangement to occur. Consequently, cancer silencer qualities are supposed to be passive at the cell level. Transformations in cancer silencer qualities are frequently procured.

Proto-oncogenes are a gathering of qualities that make ordinary cells become carcinogenic when they are transformed (Adamson, 1987; Weinstein and Joe, 2006). Transformations in proto-oncogenes are ordinarily predominant in nature, and the changed rendition of a proto-oncogene is called an oncogene.

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how does sustainable development supports the appropriate use of natural resources and long lasting development?​

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Answer:

Sustainable development is the management of renewable resources for the good of the entire human and natural community. The goal of sustainable development is to provide resources for the use of present populations without compromising the availability of those resources for future generations, and without causing environmental damage that challenges the survival of other species and natural ecosystems.

Explanation:

the stocks of non-renewable resources, such as metals, coal, and petroleum, can only be diminished by use. Consequently, sustainable economies cannot be based on the use of non-renewable resources. Ultimately, sustainable economies must be supported by the use of renewable resources such as biological productivity, and solar, wind, geothermal, and biomass energy sources. Central to the notion of sustainable development is the requirement that renewable resources are utilized in ways that do not diminish their capacity for renewal, so that they will always be present to sustain future generations of humans. To be truly sustainable, systems of resource use must not significantly degrade any aspects of environmental quality, including those not assigned value in the marketplace. An ecologically sustainable economy must be capable of supporting viable populations of native species, viable areas of natural ecosystems, and acceptable levels of other environmental qualities that are not conventionally valued as resources for direct use by humans.

An emergent property of an ecosystem could be the fall colors enjoyed by many who travel to the northeastern and midwestern US deciduous forests. True False

Answers

False. An emergent property of an ecosystem is a property that arises out of the interactions between the components of the system, and is not attributable to any one component.

Rather, the fall colors are a result of the deciduous trees shedding their leaves in preparation for the winter. This is a seasonal phenomenon which is not characteristic of the ecosystem itself, but rather the individual species which exist within it.

The autumnal changes observed in the leaves of the trees, and the resulting show of vibrant colors, is a result of the trees’ response to the changing environmental conditions. The trees are adapting to the decreasing levels of sunlight, temperatures, and moisture, which occur in the autumn months.

The emergent properties of an ecosystem are more subtle and complex than the seasonal changes in the trees’ leaves. Such properties are the result of the interactions between the various living and nonliving components of the system, and can be seen in the ways that species interact and change over time.

This could include the way that species evolve in response to changes in their environment, the way that certain species are able to dominate the environment, or the way that resources are used and exchanged between species.

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what system works with the respiratory system to circulate blood and oxygen throughout the body

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The respiratory system is supported by the circulatory system, which carries blood to and from the lungs. The circulatory system is made up of the heart and blood arteries.

The circulatory system assists in moving nutrients and oxygen from the lungs to the body's tissues and organs. Additionally, it aids in the removal of trash and carbon dioxide. Blood and oxygen are moved throughout the body through the circulatory system and respiratory system. The respiratory system, which includes the lungs and airways, brings oxygen into the body and expels carbon dioxide through breathing, whereas the cardiovascular system, which includes the heart and blood vessels, pumps oxygen-rich blood from the lungs to the respiratory system rest of the body through the circulatory system.

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What are the major components of whole blood? ANSWERS
A) hormones, enzymes, and organic C) plasma and formed elements
wastes
B) albumin and immunoglobulins D) red and white blood cells

Answers

Answer:

D) red and white blood cells

A curriculum developed by an outside group for use by others is called a(n) _________.
a. peer reviewed program
b. canned program
c. independent program
d. culturally competent program

Answers

A curriculum developed by an outside group for use by others is called a canned program. So option b is correct.

A canned program is a pre-packaged curriculum that is designed and developed by an outside organization or group. It is then made available for use by other individuals or organizations without the need for significant modification or customization.

Canned programs are often used in education, where they are commonly used by schools or school districts to provide a standardized curriculum for students. They are also used in other fields, such as business and healthcare, where they provide a set of guidelines and procedures that are intended to be followed by employees or practitioners.

Canned programs are often developed by experts in a particular field, such as educators or subject matter experts, and are based on current research and best practices. They can be a valuable resource for organizations that do not have the resources or expertise to develop their own curriculum.

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Definition
Unit 6 Vocab: DNA, RNA, and Protein Synthesis
nucleic acid molecule that allows for the transmission of genetic information an
protein synthesis
Your answer

Answers

The nucleic acid molecule that allows transmission of genetic material and protein synthesis is called messenger RNA. This messenger RNA serves as an intermediate for protein synthesis because DNA is protected in the nucleus.

What is translation?

process by which cell makes proteins using the genetic information carried in messenger RNA (mRNA).

There are two main types of nucleic acids. two types are DNA or deoxyribonucleic acid, and RNA or ribonucleic acid. Both of these molecules serve function in gene expression.

RNA carries genetic information that is translated by ribosomes into various proteins necessary for the cellular processes. mRNA, rRNA, and tRNA are the three main types of RNA involved in the protein synthesis. RNA also serves as primary genetic material for viruses.

Translation, second step in getting from a gene to a protein, takes place in the cytoplasm.

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The female reproductive system produces a reproductive cell called a(n) . These cells are produced in the ovaries. Then they travel to a(n) and finally to the uterus.

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The female reproductive system produces a reproductive cell called egg . These cells are produced in the ovaries. Then they travel to fallopian tube and finally to the uterus.

What is the female reproductive system?

The outer part of the female genitalia is called the vulva, which means covering. The vulva is located between the legs and covers the opening to the vagina and other reproductive organs of the body.

Female reproductive organs are the vagina, uterus, fallopian tubes, and ovaries. A female reproductive system enables a woman to:

produce egg cells (eggs)have intercourseprotect and nourish fertilized eggs until they are fully developedgive birth Her

Ovaries have her two main reproductive functions in the body. They produce oocytes (eggs) for fertilization and produce the reproductive hormones estrogen, progesterone, and androgens.

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In three to five sentences, describe the advantages and disadvantages using maps in modeling mitosis.

Answers

In biology, models can be viewed as representations, or perhaps events, of the structure and function of biomolecules. Cells have to do several things. First, cells must either replicate themselves or expand. In our human body, cells do both. It replicates when it breaks the skin and expands for the winter. However, some cells do not divide. But the cell also needs to decide whether to make identical copies or four half-copies. Half copies have sexual reproduction. And that's the choice between mitosis and meiosis.

The advantages and disadvantages of using these maps when modeling mitosis are:

They represented intermediate phases consisting of G1, S and G2 phases.

They also listed the stages involved in mitosis. this is also good

Other images also show mitosis, but lack potentially confusing titles or captions. The model should be able to represent the different activities that occur during mitosis. That is, the second model should contain markers that indicate the mitotic process.

The first models had to include pictorial representations for better understanding.

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Which type of rock is marble?

Answers

Answer:

Metamorphic rock

Explanation:

Marble is a type of metamorphic rock. These types of rock are made by another rock type - igneous rock/sedimentary rock. Other examples of metamorphic rocks like marble are slate, schist, quartzite, etc.

How does the force of air resistance depend on an object speed?​

Answers

Answer:

The force of air resistance clearly depends on the velocity of an object moving through the air: the larger the speed, the larger the drag force.

Explanation:

As learned above, the amount of air resistance depends upon the speed of the object. ... Thus, more massive objects fall faster than less massive objects because they are acted upon by a larger force of gravity; for this reason, they accelerate to higher speeds until the air resistance force equals the gravity force.

Answer: The force of air resistance clearly depends on the velocity of an object moving through the air: the larger the speed, the larger the drag force.

Explanation:

How can a cell increase surface area without increasing the volume?

Answers

Cells can increase their surface area by folding the plasma membrane. Total cell surface area should increase when a cell divides into two daughter cells.

There are two illustration of membrane supply that support cell division:

(1) unfolding of small surface membrane reservoirs such as microvilli and folds, and (2) exocytosis of intracellular vesicles.

As the cell radius increases, the surface area increases as the radius squared, but the volume increases as the radius cubed (much faster).

Increasing the surface area of ​​the cell increases the amount of material that diffuses into the cell. As volume and surface area increase, volume increases more rapidly, so for every doubling of cell volume, the surface area available for uptake is halved.

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what is the similarity between neural and humoral regulation?​

Answers

Explanation:

Similarities between Nervous and Hormonal mechanism for Control and Coordination in Animals

1).Both Nervous and Hormonal systems work as a receptor and affecter organ.

2).Both Nervous and Hormonal systems are controlled by Central nervous system -Human brain.

PLS HELP MEEEE!!!!!!!

Answers

Answer:

Should be D

Explanation:

This passage describes the antenna type trait in fruit flies:
Most fruit flies have a pair of antennae on their head. But, some flies appear to have an extra pair of legs on their head instead! These flies have a mutation, or change, in a gene that affects body development. This mutation makes the cells in the fly's head form mutated antennae that are like legs.
In a group of fruit flies, some individuals have mutated antennae and others have normal antennae. In this group, the gene for the antenna type trait has two alleles. The allele A is for mutated antennae, and the allele a is for normal antennae.
A certain fruit fly from this group has normal antennae. This fly has two alleles for normal antennae.
Based on this information, what is this fruit fly's genotype for the antenna type gene?

Answers

the genotype for the fruit fly is aa

Normal text Calibri
25) Look at the way the contour lines point or bend on the topographic map below. Match the blanks on
the map below using the terms "Upstream" or "Downstream" based on the direction the stream is
flowing.
Zo
1.?
2.?

Answers

All rivers go from higher to lower heights along a downhill slope that is perpendicular to the contour line above them. The V-shaped contour typically points upstream (the opposite direction from the flow of a stream or river).

What exactly is a contour line?

A contour line is an imaginary line on a map that has all of its points at the same elevation above a datum plane, often mean sea level.

What is 7th-grade contour line?

Contour lines are fictitious lines that connect places of similar height. Contouring is a technique for displaying height on a map by utilizing contour lines. This technique allows us to depict the three-dimensional reliefs on a flat map. curved lines.

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Is a polynomial yes or no? What is the area of this figure? you are not liable for damage to property next to a street or highway if in a collision. Hi! I need Help With The Bottom Answers Someone Already Answered The Top So Just The Bottom Questions! The line of best fit for a data set is y=1. 1x+3. 4. Find the residual for each of the coordinate pairs, (x,y). D. (1. 5,5. 05) 3. What rhetorical strategy does Mack employ in lines 16-20? (RI.2.6) 6. What is the solution of thesystem of equations?3x 2y = -94x + 3y = 22A. (1, -6)B. (-1, -6)C. (6, 1)D. (1,6) Can someone answer question #1 please and thank youi will mark brainliest what is the value of x 25=x^2 Researchers were interested in the season records of the Major League baseball teams, including the Los Angeles Dodgers, and the Cincinnati Reds Baseball team. Researchers collected the data at the end of the season. This sample data collection method is considered to be: A shoe box in the shape of a rectangular prism measures 12in by 7in by 4in. What is the surface area of the shoe box? Alpha Industries is considering a project with an initial cost of $8.8 million. The project will produce cash inflows of $1.68 million per year for 8 years. The project has the same risk as the firm. The firm has a pretax cost of debt of 5.85 percent and a cost of equity of 11.43 percent. The debtequity ratio is .68 and the tax rate is 40 percent. What is the net present value of the project? Which arcs are congruent?Arc S P and Arc S R Arc P Q and Arc S RArc P Q and Arc Q RArc S P and Arc P R Which point(s) lie on the graph of the equation y = -5x - 3? How do you read XYZ coordinates? Work out 2/3 - 2/5 in its simplest form Is the US a market economy? Which of the following is NOT true about fairy tales? A. Many have different "retellings" across centuries and cultures. B. Most were told orally before being written down. C. Most have never been written down. Some elements from the periodic table are listed in the table below. What is the correct order, from least to greatest, of the atomic numbers of these elements?Your answer:hydrogen, carbon, neon, nitrogenneon, nitrogen, carbon, hydrogenhydrogen, carbon, nitrogen, neoncarbon, hydrogen, neon, nitrogen on Monday in December, it was -8 degrees Celsius in Harbin China and -2 degrees Celsius and Beijing China on Tuesday and Beijing it was 5 degrees colder than it was the day before what was the new temperature?