SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It allows the zygote formed from fertilization to have triple the chromosome number of the organism.
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It allows gametes to have twice the original number of chromosomes of the organism.
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It allows gametes to have half the original number of chromosomes of the organism.
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It allows the zygote formed from fertilization to have half the original number of chromosomes of the organism.
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Detailed explanation-1: -Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical-without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes!
Detailed explanation-2: -Meiosis only occurs in reproductive cells, as the goal is to create haploid gametes that will be used in fertilization. Meiosis is important to, but not the same as, sexual reproduction. Meiosis is necessary for sexual reproduction to occur, as it results in the formation of gametes (sperm and eggs).
Detailed explanation-3: -It is significant that gametes have half the total number of chromosomes as somatic cells because when a sperm fertilizes an egg, their chromosomes will unite to make a full set. In the process of fertilization, the sperm fuses with the egg cell and they become one cell.