Question

Kayla and Layla are twins who were separated at birth. A researcher interested in studying heredity tracks them down and speaks to their different families about the benefits that can be achieved by studying the two young girls. The girls and their different sets of parents agree to participate, and studies begin assessing various areas of the girls’ lives. In order for this type of twin study to be most effective, what kind of twins should Kayla and Layla be? Group of answer choices

a. dizygotic
b. amorphous
c. monozygotic
d. conjoined

Answer 1

c. monozygotic

Step-by-step explanation:

Monozygotic twins, though arising primarily from a single zygote and considered genetically identical, will not ever be absolutely the same. Post-fertilization events such as chromosomal mosaicism, skewed X-inactivation and imprinting mechanisms, as well as other epigenetic mechanisms are responsible for the putative differences between monozygotic twins.