Identical Twins Have Identical ____,But They Do Not Always Have

Question

Identical twins have identical ____,but they do not always have identical ____.
A) mitochondrial DNA; genotypes
B) genotypes; mitochondrial DNA
C) genotypes; phenotypes
D) phenotypes; genotypes
E) phenotypes; mitochondrial DNA

Accepted Answer

Identical twins come from the same fertilized egg and therefore have the same genotypes. However, environmental factors can lead to differences in their phenotypes, such as differences in height, weight, or personality. Mitochondrial DNA is inherited maternally and can also differ between identical twins due to random mutations.