Human-Reproduction Question 505

Question: Identical twins result when:

Options:

A) The zygote divides and the daughter cells split and develop independently.

B) Two eggs with identical genetic material are fertilised, each by a different sperm.

C) An embryo splits before cellular differentiation has occurred.

D) Both [a] and [c]

Show Answer

Answer:

Correct Answer: D

Solution:

[d] If an embryo splits before cell fate has been determined, identical twins may result.