Human Reproduction Question 409
Question: Fraternal twins in man are produced when [CMC Vellore 1993]
Options:
A) Two sperms fertilize an ovum and the first two blastomeres separate from each other
B) One sperm fertilizes an ovum and first two blastomeres separate from each other
C) Egg develops parthenogenetically and first two blastomeres separate from each other
D) Two ova are fertilized simultaneously
Show Answer
Answer:
Correct Answer: D
Solution:
Dizygotic twins are also called fraternal or nonidentical twins, formed by simultaneous fertilization of two different ova by two different sperms.
BETA
