Three sources of genetic variation are mutation, recombination and gene flow.
Genetic variation is the differences in the genetic makeup of individuals within a population.
The sources of genetic variation are;
Mutation: Mutations are random changes that occur in an organism's DNA sequence.
Recombination: Recombination occurs during meiosis, the process by which gametes (e.g., sperm and egg cells) are formed.
Gene Flow: Gene flow refers to the movement of genes between populations. This occurs when individuals from different populations interbreed and exchange genetic material.
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the sclrea. hope it helps.
Answer:
Sorry if I'm wrong but I think it's B
Explanation:
A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts or human activities such as specicide and human population planning.
B. Today's plethora of microorganisms is the result of an extremely brief period of genetic recombination events.
C. Mutations function to prevent the offspring of an organism from evolving.
D. Random, heritable genetic mutations are a source of genetic variation. This variation is necessary for natural selection to occur.
The statement which is true regarding genes and evolution is as follows:
Thus, the correct option is D.
Genetic mutation may be defined as sudden, stable, and inheritable alterations in the genetic material of an organism. It is considered one of the most useful events for evolution to occur.
Random mutation takes time but they are the least effective and non-influential. Such type of mutations are easily heritable and induces genetic variation among individuals of the same species.
As a result of this, as time passes such mutations become a base for natural selection to occur and allow the favorable variation to survive and reproduce effectively.
Therefore, the correct option for this question is D.
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Answer:
the answer is D! :)
Explanation:
Answer:
the elements present in the star's atmosphere
Explanation:
The spectrum showing dark lines is an absorption spectrum. The dark lines actually indicated the energy absorbed by the elements present in the atmosphere of the star.
The elements absorb particular wavelengths and reach higher energy state. The absorbed wavelengths appear as dark lines in the spectrum.