Monozygotic (MZ) twins share ________ percent of the genes that vary across individuals, and dizygotic (DZ) twins share, on average, ________ percent of the genes that vary across individuals.

A) 50; 25
B) 90; 10
C) 50; 100
D) 100; 50

Monozygotic Twins

Monozygotic Twins are twins that develop from one zygote that splits and forms two embryos, also known as identical twins, sharing nearly 100% of their genetic material.

Dizygotic Twins

Also known as fraternal twins, are siblings born at the same time as a result of the fertilization of two different eggs by two different sperms.

Genes

Units of heredity made up of DNA that are responsible for the inherited characteristics in living organisms, dictating the development and functioning of organisms.