GENETICS AND EVOLUTION
INHERITANCE AND VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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death of the organism in which they develop
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genetic variation needed for a population to evolve
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benefits for the individual, not for the population
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Hardey-Weinberg equilibrium within a population
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Detailed explanation-1: -The ultimate source of all genetic variation is mutation. Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele. Recombination also can create a new DNA sequence (a new allele) for a specific gene through intragenic recombination.
Detailed explanation-2: -Mutations are essential to evolution; they are the raw material of genetic variation. Without mutation, evolution could not occur.
Detailed explanation-3: -Evolution is propelled by two forces: random mutations in the genes of living organisms, plus natural selection of organisms whose mutations make them better able to survive long enough to reproduce and thus pass on the same genes to their offspring.