Monozygotic twins share _____% of their genes,while dizygotic twins share _____%.
A)about 50;100
B)100;about 50
C)100;about 25
D)about 50;about 50

Question

Quizplus · Accepted Answer

Monozygotic (identical) twins share 100% of their genes because they develop from a single fertilized egg that splits in two. Dizygotic (fraternal) twins share about 50% of their genes, on average, because they develop from two separate eggs that are fertilized by two separate sperm cells. Therefore, choice B is the correct answer.

Monozygotic Twins Share _____% of Their Genes,while Dizygotic Twins Share