Does only gametes contain XX OR XY chromosomes?

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Solution

When gamete formation takes place then the genetic content divides and all the cells receive half of the genetic material. Under normal circumstances, a gamete would either possess an X or Y chromosome in case of males (XY) while gamete would possess one X chromosome in case of female (XX).

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Gametes contain one of each kind of chromosome because:

Q. __________ is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes.

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.

Q. Does the zygote formed by the fusion of two gametes have the same number of chromosomes as the parents? How?

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