Emma and Anna are identical twins who were adopted by different families a few weeks after birth.Although genetically identical,they grew up with different physical and psychological characteristics.For example,though both inherited a tendency to grow large,Anna was slim and athletic due to the active lifestyle practiced in her adoptive family.This variability can be explained by how:
A)each zygote is unique.
B)longevity genes can make an individual less vulnerable to certain diseases.
C)for each genotype,a range of phenotypes can be expressed.
D)mutated genes can be a source of genetic variability.

Question

Quizplus · Accepted Answer

This is an example of how an individual's phenotype (observable characteristics) can vary even when they have the same genotype (genetic makeup). A genotype can have a range of possible phenotypes based on environmental and lifestyle factors. In this case, Emma and Anna had the same genes but different lifestyles, resulting in different physical and psychological characteristics.

Emma and Anna Are Identical Twins Who Were Adopted by Different