Question

________ correctly explains how a favorable genetic trait can increase the frequency in a population.

• A. Lamarck's principle
• B. Natural selection
• C. Adaptive radiation
• D. Genetic recombination
• E. Segregation of alleles

Answer 1

The correct option is B Natural selection

Mutations, random inheritable changes in structure and number of DNA molecules in reproductive cells of organisms, generate the genetic variability among individuals of the population. The presence of limited available resources leads to competition among individuals for available resources to survive and reproduce. Natural selection acts upon genetic diversity and favors only those mutations which confer survival and/or reproductive advantage to the individuals over others.

Lamarck's principle is about evolution by means of acquired traits.

Adaptive radiation shows divergent evolution.

Genetic recombination is the source of genetic diversity.

Segregation of alleles explains the appearance of both dominant and recessive traits in offspring of the hydrid individual.

Therefore, the correct answer is option B.