GENETICS AND EVOLUTION
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Gene flow
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Natural Selection
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Mutation
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Genetic Drift
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Detailed explanation-1: -A classic example of a mutation in evolution in humans is the mutation in the gene HbS which makes RBC. One copy of this gene provides resistance to malaria but two copies of this gene cause sickle cell anemia.
Detailed explanation-2: -mutation theory, idea that new species are formed from the sudden and unexpected emergence of alterations in their defining traits.
Detailed explanation-3: -Darwin did not know that genes existed, but he could see that many traits are heritable-passed from parents to offspring. Mutations are changes in the structure of the molecules that make up genes, called DNA. The mutation of genes is an important source of genetic variation within a population.
Detailed explanation-4: -These are evolution by: mutation, genetic drift, gene flow, non-random mating, and natural selection.