NEET Biology question

Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child?

(A)Two X chromosomesCorrect
(B)Only one Y chromosome
(C)Only one X chromosome
(D)One X and one Y chromosome

Answer: (A)

Solution

Human females are homogametic (XX) and males are heterogametic (XY). A zygote with two X chromosomes (and the normal autosomal complement) develops into a normal female. A single Y chromosome alone (b) is

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Question ID VK-120210