why do sex cells have only half no. Of chromosomes than other cell.

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Solution

Its because those sex cells (male gamete) have to fuse with other sex cell (female gamete) to produce a new cell (zygote) which must be 2n (diploid).

These sex cells are formed by meiosis (reduction division).

It is ddue to meiosis. They have only one set of information. They cannot have duplicate information of the same gene. Gametes when fuse with the other half i.e. opposite gamete, the zygote which is formed will have two set of chromosomes. This makes the zygote diploid and hence ploidy (Number of chromosomes) are maintained in the next generation

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Similar questions

Statement 1 (S1): The gametes or sex cells have only half the number of chromosomes compared to other cells in the body.

Statement 2 (S2): Mitosis gives rise to gametes.

Which of the following statement is correct?

Statement 1 (S1): The gametes or sex cells have only half the number of chromosomes compared to other cells in the body.

Statement 2 (S2): Mitosis gives rise to gametes.

In humans, the cells of the body other than the gametes have ___ chromosomes.

Q. A : The gametes will be having half the number of chromosomes as compared to non-reproductive cells.
B : A zygote will also have only half the number of chromosomes.
Which option(s) would be right?

Q. Red blood cells have no nucleus, then why do we call them cells?

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