Identical Twins Have 100 Percent of Their Genes in Common

Multiple Choice

Identical twins have 100 percent of their genes in common, though people who know them often emphasize their personality differences. Therefore, we can say that twins have the same _______________, but environmental influences may affect each twin's _________________.

A) heritability; DNA
B) phenotype; genotype
C) characteristics; DNA
D) genotype; phenotype
E) phenotype; heritability