As far as we know, which humans have the same genotype?

Question

Quizplus · Accepted Answer

Monozygotic twins have the same genotype because they develop from a single fertilized egg that splits into two embryos. While small genetic differences can occur due to mutations or environmental factors, these are relatively rare and monozygotic twins are often used in genetic research to study the effects of nature and nurture on development. Dizygotic (fraternal) twins, on the other hand, are no more similar genetically than any other two siblings and can have different genotypes. Therefore, choice A and D are incorrect. Choice C is partly true, as there may be small genetic differences even between monozygotic twins, but it is not the best choice given that they still share the majority of their genetic information.

As Far as We Know, Which Humans Have the Same