Why can't we measure genetic variation in a population using observable traits (phenotypes)?

Biology

1 answer:

lesya692 [45]3 years ago

8 0

Answer:

b. The environment can also affect phenotype.

c. Many traits are encoded by multiple genes.

Explanation:

The types of alleles of various genes present in the members of a population can not be identified by observing phenotypes. This is because some genetic traits are regulated by more than one gene. Combinations of the dominant alleles of each of these genes regulate the final phenotype of the organisms. Skin color in humans is an example of such a genetic trait.

Likewise, some genetic traits are also affected by their surroundings. The extent of exposure to sun and pollution in the surroundings are two nongenetic factors that regulate the human skin tone in addition to multiple genes.

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