Question

Why would a population most likely not remain in genetic equilibrium after the environment changed significantly? Please explain your choice.

1. The frequency of the alleles producing traits that allow organisms to survive will likely increase.

2. The frequency of the alleles producing traits that allow organisms to survive will likely decrease.

3. The gene pool will become drastically smaller due to environmental changes.

4. None of the above

Answer 1

when environment changes significantly then:

a Frequency of alleles that produce traits to allow better survival will likely increase: CORRECT

Reason: This is fact supported by natural selection that a favorable trait is likely tO increase if it provides survival benefit.

B. frequency of alleles providing traits to allow survival will decrease: INCORRECT

Reason: Genes that provide survival benefit will increase as provided by natural selection theory given by Charles Darwin

C. Gene pool become drastically smaller: INCORRECT

Reason

:This may happen ONLY IF environment change is causing death of large no. of individuals & leading to reduction in gene pool. This condition also may lead to sudden change in gene frequency and is called genetic drift but may or may not happen depending on the env. change.