Sheena and Tina are identical twins who developed from asingle zygote and share identical DNA. Nevertheless, as they develop, differences in physical and psychological characteristics become evident. These differences are due to:

Question

Quizplus · Accepted Answer

Epigenetic change refers to modifications that occur to DNA or its associated proteins that do not change the underlying DNA sequence but can affect gene expression and, therefore, contribute to differences in physical and psychological characteristics between identical twins. Choices A, C, and D do not accurately reflect the cause of differences between identical twins, as they share the same genetic blueprint and do not have allele variation or genotypic change.

Sheena and Tina Are Identical Twins Who Developed from Asingle