Identical twins are called _______, while non-identical twins are called _______.
A) monozygotic; dizygotic
B) monozygotic; heterozygotic
C) homozygotic; monozygotic
D) dizygotic; heterozygotic

Question

Quizplus · Accepted Answer

Identical twins are formed when a single fertilized egg splits into two embryos, making them genetically identical (monozygotic). Non-identical twins, on the other hand, are formed when two separate eggs are fertilized by two different sperm, making them no more genetically similar than any other siblings (dizygotic). The terms heterozygotic and homozygotic refer to the genetic makeup of an individual, and are not used to describe twins.

Identical Twins Are Called _______, While Non-Identical Twins Are Called