Question

Out of the 23 pairs of chromosomes that human beings have, 1 pair is of sex chromosomes then what are the other 22 pairs of chromosomes called??

Answer 1

Answer:

Out of the 23 pairs of chromosomes that human beings have, 1 pair is of sex chromosomes and other 22 pairs of chromosomes are known as Autosomes or Autosomal chromosomes.

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Sex Determination in Human Beings:

Human beings contain 46 chromosomes, having 23 pairs of chromosomes and 22 pair of chromosomes are exactly the same in number (known as autosomes).

In female X-X chromosomes are present whereas in male X-Y chromosomes are present.

During spermatogenesis 50% of sperm carry X chromosome and 50% carry Y chromosome.

During fertilization, if sperm carrying X chromosome fuse with egg then female offspring will form. But if sperm with Y chromosome fuse with egg then male offspring formation takes place.

Therefore, formation of either male offspring or female offspring depends only on male sperm that which type of chromosome it is carrying.

Answer 2

Answer:

Out of the 23 pairs of chromosomes that human beings have, 1 pair is of sex chromosomes, then other 22 pairs of chromosomes called autosomes.

Extra info:

• Humans are having 46 chromosomes of 23 pairs of chromosomes.

• Out of them, 22 chromosomes are autosomes whereas that 1 pair of chromosomes is called sex chromosomes.

• Chromosomes for. female - XX and Chromosomes of male - XY in which one is active.

• Sex chromosomes takes part in the determination of sex.

• In Male gametes, Half sperms carry X Chromosomes and half sperms carry Y chromosomes. (22 + X) and (22 + Y)

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