A) Two X-chromosomes
B) Only one Y-chromosome
C) Only one X-chromosome
D) One X and one Y-chromosome
Correct Answer: A
Solution :
The sex determining mechanism in case 0f humans is XY type Sperms are of two types, one containing X-chromosome and another containing Y-chromosome. The ovum is of one type only, ie, contain X chromosome. The fertilization of ovum with Y-chromosome carrying sperm results into a male offspring.You need to login to perform this action.
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