AP BIOLOGY

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EVOLUTION

HARDY WEINBERG EQUILIBRIUM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A few deer in a small population are killed by hunters. Both of these deer carry a rare recessive allele. Allele frequencies in the population change as a result. This is an example of:
A
Genetic drift
B
Sexual selection
C
Non-random mating
D
Mutation
Explanation: 

Detailed explanation-1: -Small populations tend to lose genetic diversity more quickly than large populations due to stochastic sampling error (i.e., genetic drift). This is because some versions of a gene can be lost due to random chance, and this is more likely to occur when populations are small.

Detailed explanation-2: -So, the correct answer is-Interbreeding within small population.

Detailed explanation-3: -Genetic drift can result in the loss of rare alleles, and can decrease the size of the gene pool. Genetic drift can also cause a new population to be genetically distinct from its original population, which has led to the hypothesis that genetic drift plays a role in the evolution of new species.

Detailed explanation-4: -Once the frequency of the allele is at 100%, i.e. being the only gene variant present in any member, it is said to be “fixed” in the population.

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