Meiocytes are the cells that undergo meiosis to produce gametes. They are diploid and produce 4 haploid cells after meiosis or reduction division. They are also known as gamete mother cells.
The table below shows the number of chromosomes in diploid meiocytes and haploid gametes in various organisms.
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Apple |
34 |
17 |
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Rice |
24 |
12 |
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Maize |
20 |
10 |
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Potato |
48 |
24 |
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Onion |
16 |
8 |
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Ophioglossum (a fern) |
1260 |
630 |
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Fruit fly |
8 |
4 |
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Butterfly |
380 |
760 |
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Housefly |
12 |
6 |
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Rat |
42 |
21 |
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Cat |
38 |
19 |
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Dog |
78 |
39 |
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Human beings |
46 |
23 |
The division in meiocytes that leads to gamete formation is under strict control. The control varies in different organisms. These checkpoints eliminate any mutants, and the cell cycle does not complete further, e.g. in yeast and human beings. In plants, these meiotic cell cycle checkpoints do not occur and mutant cells also complete meiosis to produce defective microspores.
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Recommended Video:
Types of Reproduction Class 12 Biology – Reproduction in Organisms L-2 | NEET 2022-2023 Exam Prep
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