We would expect the greatest degree of phenotypic similarity among
A) fraternal twins.
B) identical twins.
C) siblings.
D) parents and their children.

Question

Quizplus · Accepted Answer

Identical twins, also known as monozygotic twins, come from a single fertilized egg that splits into two embryos. Therefore, they have virtually identical genetic material, resulting in the greatest degree of phenotypic similarity. Fraternal twins, on the other hand, come from two separately fertilized eggs and share approximately 50% of their genetic material, while siblings and parents and their children share only 50% and 25% of their genetic material, respectively, leading to less phenotypic similarity.

We Would Expect the Greatest Degree of Phenotypic Similarity Among