The number of chromosomes in parents and offsprings of a particular species remains constant due to:

REPRODUCTION IN ORGANISMS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	Doubling of chromosomes after zygote formation
B	Halving of chromosomes during gamete formation
C	Doubling of chromosomes after gamete formation
D	Halving of chromosomes after gamete formation

Explanation:

Detailed explanation-1: -The gametes have half the number of chromosomes. After their fusion, the zygote thus formed has a full set of chromosomes. Therefore, the numbers of chromosomes in parents and offsprings of a particular species remain constant.

Detailed explanation-2: -Final answer: The number of chromosomes in parents and offsprings of a particular species remains constant due to the halving of chromosomes during gamete formation.

Detailed explanation-3: -In mitosis, the number of chromosomes is maintained in the cell.

Detailed explanation-4: -When two gametes fuse, the zygote formed contains the full set of chromosomes. Hence, the formation of gametes by meiosis helps to maintain the number of chromosomes in progenies.

Detailed explanation-5: -Fertilization of egg and sperm restores the number of chromosomes in the zygote (46 or 23 pairs)

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