Question

what is sex chromosome?what determined the sec of a baby?
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Answer 1

Answer:

The chromosomes that are responsible for determining the sex of a baby ( whether girl or boy)...therefore sex chromosomes present in DNA  determine the sex of the baby ..  There are 23 pairs ( 46 chromosomes ) present in a human body ...

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Answer 2

Answer:itis a thread that carries sex genes in the nucleus

Tje sex of a baby is determined by the X and Y chromosomes

Female is XX

male is XY

so when the two mate the babies will be either maleor female like in tje picture