Researchers Often Use Twins to Study Whether Variation in a Given

question 4

Essay

Researchers often use twins to study whether variation in a given behavior depends more on the variation in genes than on variation in the environment. Define the difference between monozygotic twins and dizygotic twins. If a researcher had two sets of twins (one pair of dizygotic twins and one pair of monozygotic twins) and both sets resembled each other in terms of their sense of humor, what is the researcher likely to conclude about the heritability of that trait?

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