Mary and Ashley are identical twins.Abbie and Chandra are fraternal twins.Which of the following is most likely to be true about the timing of puberty?
A)Mary and Ashley will reach menarche about 12 months apart.
B)Abbie and Chandra will reach menarche within a month or two of each other.
C)Mary and Ashley will reach menarche within a month or two of each other.
D)Abbie and Chandra will reach menarche at around the same time.

Question

Quizplus · Accepted Answer

Identical twins are genetically identical and therefore are more likely to experience puberty at a similar time. Fraternal twins, on the other hand, share only 50% of their genes and may experience puberty at different times. Therefore, Mary and Ashley are more likely to reach menarche within a month or two of each other, while Abbie and Chandra may reach menarche at different times.

Mary and Ashley Are Identical Twins