NEET Biology question

Sex is determined in human beings

(A)By ovum
(B)At time of fertilizationCorrect
(C)40 days after fertilization
(D)Seventh to eighth week when genitals differentiate in foetus

Answer: (B)

Solution

In humans, sex is determined by the type of sperm (X-bearing or Y-bearing) that fertilizes the egg: an X-bearing sperm gives an XX (female) zygote, while a Y-bearing sperm gives an XY (male) zygote. This is fixed the instant fertilization occurs, not later

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Question ID VK-120166