Natural selection is founded on three principles: most qualities are inherited inheritance, more children are born than can survive competition, and children with more desirable characteristics will survive and produce more offspring variation.
One of the four fundamental tenets of evolutionary theory, along with mutation, migration, and genetic drift, is natural selection. Populations that exhibit variety in features, such as colour, are subject to natural selection. Its core tenet is that individuals are more likely to reproduce when they possess a characteristic that makes them more likely to survive in a given environment than their counterparts. Four requirements must be met for natural selection to take place: reproduction, inheritance, variety in physical traits, and variation in the number of children produced by each person.
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What is the correct term for variation in characteristics within populations of the same species?
Phenotypic variation is the differences among the genomes of different members of the same species. A genome is composed of all the hereditary information, all the genes of an organism.
What is Phenotypic variation?Phenotypic variation is the variability in phenotypes which exists in a population. These are the result of genetic variation in an individual. For example, people come in all types of shapes and sizes including height, weight, and body shape are the common phenotypes that vary. Hair, eye color, and the ability to roll the tongue are observable variable phenotypes, too.
Phenotypic variation is the sum total of all the variations in characteristics within populations of the same species. In contrast, the genotypic variation is the sum total of all the variations such as allele frequency which are present in the genome of populations of the same species.
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Someone please help me I’ll give out brainliest please dont answer if you don’t know
Answer:
hi
Explanation:
what else is there a video on what to do???
Help please?!!!???!????!??!??????????????!??!?!
Answer:
here is your answer
Explanation:
C.
it may be
Answer:
it is negatively charged
help me on this question and NOOOOO LINKSS
Answer:
the first one
Explanation:
parasites are usually much more numerous than their hosts, but predators are usually less numerous than their prey.
Im not 100% sure its just what i think it is
I mostly think it's B, because parasites give effects on their host but not at the same time.
True or False: Growing crops raises the carbon levels and causes global warming.
Answer:
For rainfed wheat grown in more arid climates, such as southern Africa and India, results show that doubled carbon dioxide levels, and their associated climate change impacts, increase yield by 8 percent, an increase that's driven by improved crop water productivity of up to 50 percent. true
Explanation: do you want one?
Growing crops does not raise the carbon levels and does not cause global warming ; ( i.e. the statement in the question is False ).
Crops/plant make use of carbon dioxide in the atmosphere during photosynthesis, releasing oxygen and energy into the atmosphere as a by product from photosynthesis.
Global warming is caused by the presence of green house gases in the atmosphere and the removal of CO₂ by plants from the atmosphere during photosynthesis helps with reduction of a green house gas ( CO₂ ).
Hence we can conclude that Growing crops does not raise the carbon levels and does not cause global warming .
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Does stomach lining, liver, skin repair itself the fastest
The stomach lining is able to heal itself the fastest, followed by the skin, and then the liver.
What do you mean by the stomach lining?
The stomach lining is the innermost layer of the stomach, made up of cells that produce digestive enzymes and secretions that help break down food. This layer also helps protect the stomach from the acidic environment within the stomach.
The stomach lining is able to heal itself quickly because it contains specialized cells that can quickly make new tissue to replace damaged cells. The skin is also able to heal quickly because it is made up of many layers of cells that can quickly reproduce to form new skin. The liver is able to regenerate itself, but it takes longer than the stomach lining or skin because the liver is made up of fewer cells and the process of regeneration is more complex.
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How cloud computing reduces energy consumption?
Cloud computing can reduce energy consumption by optimizing the physical environment (think cloud computing facilities in cold climates), cutting the power spent to cool the servers.
Cloud computing has several advantages. B. Businesses can efficiently store, protect, and analyze large amounts of data. Cloud computing can significantly reduce energy consumption, waste, and greenhouse gas (GHG) emissions. The
data center is best known for cloud computing and contains a collection of servers that store business information and run applications.
Idle servers and resources in data centers waste a lot of energy. Energy is wasted when the server is overloaded. There are few techniques for load balancing, VM virtualization, VM migration, resource allocation, job scheduling, etc. used to solve the problem.
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Part A Bipotential state Which of the following statements best describes the bipotential state of a developing fetus? Hints O a stage of development when the internal and external reproductive organs have developed into both male and female O a stage of development when the internal and external reproductive organs are only female O a stage of development when the internal and external reproductive organs are only male O a stage of development when the internal and external reproductive organs have the potential to be either male or female
The Bipotential state of the growing fetus is a stage of development when the internal and external reproductive organs have the potential to be either male or female. Correct option(C)
During fetal development after two months the generation of sex organs or gonads take place to determine the sex of the growing fetus.
Until about two months after fertilization the immature gonads of human embryos are potential means that they can develop either into testes or ovaries. Undifferentiated gonads of XX or XY individuals are apparently identical and can form either ovaries or testes.
This period of Bipotential stage is also known as indifferent stage of gonads development.
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Researchers have found a general relationship between testicular cancer and exercise.Increased exercise is associated with a decrease in incidence of testicular cancer.However,a positive relationship (increased incidence of testicular cancer)was found between testicular cancer and riding bikes or horses.Several factors might be hypothesized to bring about this result.Which of these hypotheses is properly related to a prediction that arises from it?
A) Hypothesis: Riding bikes or horses causes trauma to the testes.Prediction: Bike or horse riding will cause testes to shrink.
B) Hypothesis: The seat on bikes and the saddle on horses are made of material containing chemicals that damage testicular cells.Prediction: Chemicals found in bike seats or horse saddles damage testicular cells.
C) Hypothesis: Riding bikes or horses increases scrotal temperature,which damages testicular cells.Prediction: Bike riders are more likely to wear briefs than boxers as their underwear of choice.
D) Hypothesis: Mutations that lead to testicular cancer make men more likely to ride bikes or horses.Prediction: Men who ride bikes or horses have a higher rate of mutations than nonriders.
Answer:
fiduciary Goodison is p does em is p dk by hi us
What are the hereditary diseases?
Sickle cell anemia, cystic fibrosis, and hemophilia are some of the hereditary diseases that occur because of changes in the genetic make of an organism.
Hereditary diseases usually referred to as inherited diseases or genetic disorders, are a group of genetic diseases that are brought on by changes in a person's genetic makeup (DNA). These changes are caused by mutation. This occurs when the normal bases in the DNA is replaced with the faulty base or mismatched base.
Then, these illnesses are passed down from one generation to the next, or in other words, they are inherited from one set of parents to another. For example, sickle cell anemia, cystic fibrosis, and hemophilia are some examples of hereditary diseases.
Because sickle hemoglobin requires two copies of the gene to be present, sickle cell anemia is referred to as a recessive condition. They must get one from each parent, which code for abnormal hemoglobin.
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Controlled variable to the science experiment, “are fingerprints inherited?”
The controlled variable to the science experiment 'are fingerprints inherited' may include the use of molecular markers of known molecular size.
What is a controlled variable in a science experiment?A controlled variable in a science experiment is any condition that remains constant along the experiment and thus serves to make comparisons with the target experimental groups such as in this case the use of samples of individuals containing molecular markers of known molecular size, which allow us to identify the alleles of polymorphism in the sample after electrophoresis agarose gel and visualization under UV light.
Therefore, with this data, we can see that a controlled variable in a science experiment is any condition that stays the same in the experiment, and therefore it can be used to determine the presence or absence of a given allele in a DNA fingerprint.
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Match the word to the correct definition.
Autotroph- b, heterotrophs- f, producers- A, consumer- k, foodweb- g, biomagnification I, decomposer- h, biomass- D, tropic level- j, energy- pyramid - e, food chain- c.
What are the terms used in ecosystems?
An autotroph organism makes its own food, heterotrophs obtain energy to eat another organism, and producers produce energy for other organisms and also for themselves.
Consumer organism which consumes any other organism, foodweb levels of organism shares relation with each other and to the primary source of energy.
Biomagnification is a concentration of a substance, a decomposer breaks down dead organic matter.
Biomass amount of organisms in a given area or volume, a tropic level diagram showing the interrelationship.
Therefore, an energy pyramid is a flow chart that shows the amount of energy transferred to different tropic levels, food chain shows the eating behavior.
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What are protons. in your own words
Answer:
a particle with a positive charge that is in the nucleus of an atom
Explanation:
If the evaporation rate is higher than the precipitation rate, what will happen to a lake?
Answer:
it will eventually dry out
Answer:
It will eventually evaporate.
Explanation:
if you have more water evaporating (turning into clouds) than precipitating (raining) than eventually the whole lake will be evaporated. Because there will be no more water to evaporate if the rate stays the same.
Shearing or tearing forces are placed on the organs and their supportive tissues in the mechanism of injury called
Mechanism of injury or MOI alludes to the technique by which harm (injury) to skin, muscles, organs, and bones happens. Medical services suppliers use MOI to assist with deciding how likely it is that a significant injury has happened.
Mechanism of injury (MOI) explicitly alludes to the technique by which injury and its related powers straightforwardly or in a roundabout way influence the human body. MOI suggests a particular exchange of energy from one source (for example the climate) to another (for example the human body).
The Mechanism of injury is the manner by which a physical issue was or may have been maintained. This is the general activity, openness or occasion that best portrays the conditions that did or may have brought about the most serious injury or infection. This is alluded to as the Take a chance with Calculate the gamble evaluation module.
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5.
The environment has the greatest effect on the expression of genes when
which of the following occurs?
Answer:
The environment has the greatest effect on the expression of genes when which of the following occurs? relies on meiosis, a process that promotes recombination of genes, for the production of gametes. The ability for people to roll their tongue is dominant to people who cannot.
Explanation:
A young goat has downward-curved horns. Its father has upward-curved horns while its mother has downward-curved horns. Which of these statements is the explanation?
A young goat has downward-curved horns. One copy of the gene for horn shape was passed down to the young goat from its father and one copy from its mother is the explanation.
A ratio of dominant to recessive traits is the result of the gene combination from the parents, as stated by Mendel's second law of inheritance, which states that a pair of traits segregate independently of another pair during gamete formation. In phenotype sharing, the offspring will only exhibit the dominant trait when parents with required traits are crossed together. This suggests that the dominant mother and not the dominant father passed on the horn-shaped gene to the young goat.
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In your own words, describe what happens when a flat sign is put in front of a pitch and how the sound is affected.
Answer:
When a flat is put in front of a pitch it raises the pitch of the original note by a half step, a flat lowers the pitch of a note by one half step.
Explanation:
What are some of the strategies which can be used on an individual with chronic disease to enable change of behaviour overtime?
When it comes to helping individuals with chronic diseases to change their behaviors and habits, some of the most effective strategies include:
Education: Educating the individual about the condition, the risks of not changing their behaviors, and the potential benefits of changing them.Goal Setting: Helping the individual to set realistic, achievable goals for behavior change, and then providing support and encouragement throughout the process.Self-Monitoring: Encouraging the individual to track their progress in making changes to their behaviors, either through physical notebooks or via apps.Motivation: Offering incentives and rewards for positive behavior change, such as giving praise or offering rewards for small successes.Social Support: Helping the individual to build a support network of friends and family who can provide motivation, assistance, and accountability throughout the process.Cognitive Restructuring: Helping the individual to identify and challenge the negative thoughts and beliefs that may be contributing to the negative behaviors, and replacing them with more positive and helpful thoughts.Problem-Solving: Working with the individual to develop strategies for overcoming obstacles that may be standing in the way of making changes.Learn more about strategies:
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Because the human embryo is able to split during early cleavage or blastocyst formation to produce two viable progeny, it is said to exhibit _______ development.
Answer:
This question lacks options, options are:
a) indirect
b) mosaic
c) determinative
d) regulative
e) direct.
The correct answer is d.
Explanation:
The egg (ovum) like the embryo during the first embryonic divisions, do not possess any sign of polarity. This development mechanism can be called regulative development(in contrast to the mosaic model) since the fate of the cells that originate is not fixed and can be modified during development. In regulative embryos, part of the embryo can be removed and the remaining cells can compensate for the loss and give a complete individual as the final product.The strongest evidence that continues to support this regulatory model is based on the plasticity or potential that mammalian cells possess before implantation. It is known that the blastomeres produced by the first divisions can be replaced with each other or even can be eliminated without apparently altering the embryonic development and therefore they are equivalent (without polarity).
pleaase help im stuck and do the paragraph
Conservation Models Activity
You have explored some informative examples of models. Now it's time to get creative and make your own model. Here is the requirement checklist for your model:
• Model types can include drawings, diagrams, physical models, virtual simulations, or videos.
• Model must be created by you, not something selected from an online or outside source.
• Submit a presentation, picture, video, or screenshot of your model.
• Submit a one-paragraph summary describing the topic you chose, your model, what it represents, how you made it, and the specific science involved. It is important that you are using science terminology and are accurate.
Now that you know how to create and submit your model, you will need to choose a topic for your model. Choose one of the three topics listed below. Select each topic for an overview.
Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem. You should use multiple parts of the carbon cycle to demonstrate this cycle.
there yall go i got a 100 on this :)
which of these is a structural adaptation a.) a pointed beak b.) swarming, c.) the ability to hunt, d.) migrating
Explanation:
Option A is the correct i.e a pointed beak .
7. What is the name of the mutation in which every codon in the
sequence got changed?
Answer: A missense mutation changes the identity of a codon from one amino acid to another, resulting in a change to the protein primary structure. A silent mutation occurs when a mutation does not change the amino acid coded for by that codon.
Explanation:
Needs help ASAP
Which of the following is an example of genetic engineering?
A. A string of three bases within an RNA molecule codes for a specific amino acid
B. A string of amino acids bonds together to form a protein that controls a trait
C. A bacterial cell produces human insulin because human DNA has been added to the bacterial DNA
D. And the nucleus of a human cell DNA strands separate and are used as a template for new RNA molecules
A bacterial cell produces human insulin because human DNA has been added to the bacterial DNA is an example of genetic engineering.
What do you mean by genetic engineering?Genetic engineering, also called genetic modification or genetic manipulation, is the modification and manipulation of an organism's genes using technology.
For example, genetic engineering may involve adding a gene from one species to an organism from a different species to produce a desired trait. Used in research and industry, genetic engineering has been applied to the production of cancer therapies.
Genetic engineering is accomplished in three basic steps. These are (1) The isolation of DNA fragments from a donor organism; (2) The insertion of an isolated donor DNA fragment into a vector genome and (3) The growth of a recombinant vector in an appropriate host.
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Please help me with biology works
I need this ASAP
Answer:
H
Explanation:
I can’t even see the questions
Which type of cells do all sense organs contain?
Answer:
The sense organs contain groups of specialised cells called receptor cells which produce electrical impulses in response to specific stimuli.
Explanation:
The type of cells all sense organs contain is receptor cells.
What is receptor cells?Receptor cells are proteins that are found in plasma membrane or inside cells that receive electric impulses from the brain.
Therefore, The type of cells all sense organs contain is receptor cells.
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What does gene expression control?
a. the proteins that are made by the cell
b. the rate at which DNA replication occurs
c. the duration between cell cycles
d. the division of the cell nucleus
Answer:
a
Explanation:
Control of gene expression ,
1)Transcriptional control : controls when and how often the gene is being transcribed.
2)Post-transcriptional control :
- RNA process control determines how often RNA is been processed.
- RNA transport and location control : selection of mRNA to be transported to
cytosol.
- mRNA degeneration control ; selection of which mRNA is getting destabilized.
3)Translational control ; section of which mRNA is being translated.
4) Protein activity control / post-translational control ; regulation of proteins by activation , deactivation, degeneration, compartmentalization and modification of protein.
Gene expression control the proteins that are made by the cell. So, the correct option is A.
What is Gene expression?Gene expression is the procedure through which a gene's information is used to create a functioning gene product, allowing it to produce end products like proteins or non-coding RNA and ultimately have an impact on phenotypes.
A finely controlled process called gene expression enables a cell to react to its changing surroundings. It serves as both a headphone jack that raises or lowers the level of proteins produced as well as an on/off switch to regulate when proteins are created. Transcription and translation are the two essential processes that go into the creation of a protein. Gene expression control the proteins that are made by the cell.
Therefore, the correct option is A.
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Which of the following statements best describes an unintended environmental consequence of aquaculture fish-farm enclosures located in estuaries?
Aquaculture enclosures can harbor parasites that can negatively affect wild populations that breed in estuaries.
The best description for an unintended environmental consequence of aquaculture fish-farm enclosures located in estuaries is: (D) Aquaculture enclosures can harbor parasites that can negatively affect wild populations that breed in estuaries.
Estuaries are the coastal water bodies where the freshwater from rivers and salt water from the oceans mix together. Estuaries are the partially covered water bodies that act as transition zones. Hence they form an example of ecotone.
Aquaculture is the farming, breeding and raising of the aquatic animals as well as plants. The process of aquaculture is inclined towards the commercial supply of seafood and other products.
The given question is incomplete, the complete question is:
Which of the following statements best describes an unintended environmental consequence of aquaculture fish-farm enclosures located in estuaries?
(A) Fish farms create waste that contaminates potential drinking-water resources for coastal communities.
(B) Aquaculture can decrease pressures on overexploited fisheries, increasing fish populations.
(C) Cultivated fish can escape and breed with wild populations, increasing the population size of wild fish in coastal waters.
(D) Aquaculture enclosures can harbor parasites that can negatively affect wild populations that breed in estuaries.
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what are in the synaptic knobs that then travel across the synaptic cleft to initiate a response in the next cell
Neurotransmitter molecules penetrate the synaptic cleft and attach to receptor proteins on postsynaptic cells.
Synapses can be thought of as converting an electrical signal (the action potential) into a chemical signal in the form of neurotransmitter release, and then switching the signal back into an electrical form when the transmitter binds to the postsynaptic receptor.
These stimulate the production of "neurotransmitters," which pass the impulse across the "synapse to the next neuron." After a nerve impulse releases "neurotransmitters," these "chemical messengers" travel over the tiny "synaptic gap" and are taken up by specialized receptors on the surface of the next cell.
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2. Which material is found near yolcanoes?
A. Coal
B. Oil
C. Freshwater
D. Metal
Answer:
the answer is D. Metal..
Answer:
Metal
Explanation: