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Asked by Dhruv Last Modified
In meiosis, the division of the cell's genetic material results in the formation of four daughter cells called gametes. These daughter cells can vary in size depending on various factors. Here are examples where the four daughter cells from meiosis are either equal or unequal in size:
Equal Size:
Unequal Size:
Oogenesis in Animals: In oogenesis, which occurs in the ovaries of female animals, diploid oogonium cells undergo meiosis to produce four daughter cells, but only one of these cells becomes a functional egg (ovum), while the other three become smaller polar bodies. The ovum receives most of the cytoplasm and organelles, making it larger than the polar bodies. This asymmetry in size ensures that the developing embryo receives sufficient nutrients and cellular machinery for early development.
Spermatogenesis in Animals: In spermatogenesis, which occurs in the testes of male animals, diploid spermatogonium cells undergo meiosis to produce four haploid spermatids. While spermatids initially have equal sizes, during the maturation process called spermiogenesis, one of the spermatids develops into a mature sperm cell (spermatozoon), which is much smaller than the other three residual bodies. These residual bodies are eventually reabsorbed by the body or expelled. Thus, although the initial daughter cells may be equal in size, the end products of spermatogenesis are unequal in size.
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