Imagine That a Human Characteristic Is Determined by Genotype Only

Multiple Choice

Imagine that a human characteristic is determined by genotype only, with no environmental influence. Based on the amount of shared genetic information in MZ (monozygotic) and DZ (dizygotic) twins, what would you expect the concordance values to be in these two sets of twins?

A) The concordance values would be near 100% for both types of twins.
B) The concordance values would be near 50% for both types of twins.
C) The concordance values should be close to 100% for MZ twins and a concordance value much less for DZ twins.
D) The concordance values should be close to 50% for MZ twins and about 25% for DZ twins.
E) The concordance values should be close to 25% for MZ twins and about 75% for DZ twins.