Question

What is a Sex-Chromosome? How many sex-chromosome are found in a man?

Answer 1

What is a Sex-Chromosome?

• Sex chromosomes are chromosomes that determine whether the individual is male or female. Though these two chromosomes pair with each other during meiosis, there is usually very minimal homology or recombination between them, primarily because of a large difference in their genetic content and size. Often one chromosome is smaller, and appears to retain only those genes that are necessary for sex determination.

How many sex-chromosome are found in a man?

• Males have one Y chromosome and one X chromosome, while females have two X chromosomes. In mammals, the Y chromosome contains a gene, SRY, which triggers embryonic development as a male. The Y chromosomes of humans and other mammals also contain other genes needed for normal sperm production.

Answer 2

A man contain 23 pairs of chromosomes,in that 22 are autosomes and one pair is sex chromosome..

Sex chromosome means a chromosome determining the sex of a organism..