REPRODUCTION
REPRODUCTION IN ORGANISMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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egg and sperm cells are haploid
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haploid cells have half the number of chromosomes as diploid
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a zygote is diploid and the parent is diploid
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haploid cells have twice the number of chromosomes as diploid cells.
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Detailed explanation-1: -Definition. Haploid refers to the presence of a single set of chromosomes in an organism’s cells. Sexually reproducing organisms are diploid (having two sets of chromosomes, one from each parent).
Detailed explanation-2: -The total number of chromosomes in diploid cells is described as 2n, which is twice the number of chromosomes in a haploid cell (n).
Detailed explanation-3: -A diploid cell contains two complete sets of chromosomes in its nucleus, whereas haploid cells only contain a single copy. Most human body cells are diploid, and only the gametes (sperm and egg cells) are haploid.
Detailed explanation-4: -Humans, like many other species, are called ‘diploid’. This is because our chromosomes exist in matching pairs – with one chromosome of each pair being inherited from each biological parent. Every cell in the human body contains 23 pairs of such chromosomes; our diploid number is therefore 46, our ‘haploid’ number 23.