Chase and Carson share the same genotype. Therefore, Chase and Carson are considered ______.
A) dizygotic twins
B) monozygotic twins
C) to each have two large X-shaped chromosomes
D) to each have two small Y-shaped chromosomes

Question

Quizplus · Accepted Answer

Monozygotic twins, also known as identical twins, are formed when a single fertilized egg splits into two embryos, resulting in them having the same genotype. Therefore, Chase and Carson are monozygotic twins. Option A (dizygotic twins) cannot be correct because dizygotic twins (fraternal twins) are formed from two separate fertilized eggs, so they would not have the exact same genotype. Options C and D are incorrect because they refer to the structure of sex chromosomes, which do not necessarily determine whether twins have the same genotype or not.

Chase and Carson Share the Same Genotype