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Solution


Q.

The number of pairs of sex chromosomes in the zygote of humans is:
1 1  
2 2  
3 3  
4 4  

Ans.

(1)

In the human zygote, the number of pairs of autosomes and sex chromosomes is the same as in an adult human. A human adult possesses 23 pairs of chromosomes, 22 of which are autosomes and 1 of which is a sex chromosome.