Based on twin studies, you and your sibling, who was adopted, will be __________.

A) only slightly more similar in personality than randomly selected strangers
B) as similar as genetically related siblings
C) as similar as identical (monozygotic) twins
D) as similar as fraternal twins

Monozygotic Twins

Twins that result from the splitting of a single fertilized egg, sharing nearly 100% of their genes, also known as identical twins.

Fraternal Twins

are siblings born at the same time who share the same womb but have different fertilized eggs, making them genetically similar as typical siblings.