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This is an accepted version of this page This is the latest accepted revision, reviewed on 16 February 2025. Cell division producing haploid gametes For the figure of speech, see Meiosis (figure of speech). For the process whereby cell nuclei divide to produce two copies of themselves, see Mitosis. For excessive constriction of the pupils, see Miosis. For the parasitic infestation, see Myiasis ...
Meiosis generates genetic variation in the diploid cell, in part by the exchange of genetic information between the pairs of chromosomes after they align (recombination). Thus, on this view, [28] an advantage of meiosis is that it facilitates the generation of genomic diversity among progeny, allowing adaptation to adverse changes in the ...
In rhetoric, meiosis is a euphemistic figure of speech that intentionally understates something or implies that it is lesser in significance or size than it really is. Meiosis is the opposite of auxesis, and is often compared to litotes. [1] [2] [3] The term is derived from the Greek μειόω ("to make smaller", "to diminish").
Meiosis undergoes two divisions resulting in four haploid daughter cells. Homologous chromosomes are separated in the first division of meiosis, such that each daughter cell has one copy of each chromosome. These chromosomes have already been replicated and have two sister chromatids which are then separated during the second division of ...
Oogenesis, the process of female gamete formation in animals, involves meiosis (including meiotic recombination) of a diploid primary oocyte to produce a haploid ovum. Spermatogenesis, the process of male gamete formation in animals, involves meiosis in a diploid primary spermatocyte to produce haploid spermatozoa. In animals, ova are produced ...
In the first stage of sexual reproduction, meiosis, the number of chromosomes is reduced from a diploid number (2n) to a haploid number (n). During fertilisation, haploid gametes come together to form a diploid zygote, and the original number of chromosomes is restored.
Paraprosdokian – a sentence in which the latter half takes an unexpected turn. Parataxis – using juxtaposition of short, simple sentences to connect ideas, as opposed to explicit conjunction. Parenthesis – an explanatory or qualifying word, clause, or sentence inserted into a passage that is not essential to the literal meaning.
The discovery of mitosis, meiosis and chromosomes is regarded as one of the 100 most important scientific discoveries of all times, [9] and one of the 10 most important discoveries in cell biology. [10] Meiosis was discovered and described for the first time in sea urchin eggs in 1876, by Oscar Hertwig.