EVOLUTION
EVIDENCE FOR EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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natural processes that produce genetic diversity
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natural processes that always affect the phenotype
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unnatural processes that always affect the phenotype
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unnatural processes that are harmful to genetic diversity
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Detailed explanation-1: -Mutations within a DNA sequence are natural processes that produce genetic diversity. This implies the correct is A. Mutations refer to change that takes place in individual DNA sequence which can be a result of environmental factors or mistakes when DNA is copied.
Detailed explanation-2: -Mutations are changes in the genetic sequence, and they are a main cause of diversity among organisms.
Detailed explanation-3: -Most of the mutations that we think matter to evolution are “naturally-occurring.” For example, when a cell divides, it makes a copy of its DNA-and sometimes the copy is not quite perfect. That small difference from the original DNA sequence is a mutation. Spontaneous breakdown of DNA can also cause mutations.
Detailed explanation-4: -There are three types of DNA Mutations: base substitutions, deletions and insertions.
Detailed explanation-5: -Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism’s offspring).