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Question
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.
Answer
This answer is hidden. It contains 46 characters.
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