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2. Meiosis - Wikipedia

   en.wikipedia.org/wiki/Meiosis

   This is an accepted version of this page This is the latest accepted revision, reviewed on 19 December 2024. 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 ...

3. Leptotene stage - Wikipedia

   en.wikipedia.org/wiki/Leptotene_stage

   The leptotene stage, also known as leptonema, is the first of five substages of prophase I during meiosis, the specialized cell division that reduces the chromosome number by half to produce haploid gametes in sexually reproducing organisms.

4. Bivalent (genetics) - Wikipedia

   en.wikipedia.org/wiki/Bivalent_(genetics)

   The formation of a bivalent occurs during the first division of meiosis (in the zygotene stage of meiotic prophase 1). In most organisms, each replicated chromosome (composed of two identical sister chromatids [1] [2]) elicits formation of DNA double-strand breaks during the leptotene phase. [3]

5. Origin and function of meiosis - Wikipedia

   en.wikipedia.org/wiki/Origin_and_function_of_meiosis

   One theory on how meiosis arose is that it evolved from transformation. [2] According to this view, the evolutionary transition from prokaryotic sex to eukaryotic sex was continuous. Transformation, like meiosis, is a complex process requiring the function of numerous gene products.

6. File:Meiosis Stages.svg - Wikipedia

   en.wikipedia.org/wiki/File:Meiosis_Stages.svg

   You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

7. Chromosome segregation - Wikipedia

   en.wikipedia.org/wiki/Chromosome_segregation

   During the phase of meiosis labeled “interphase s” in the meiosis diagram there is a round of DNA replication, so that each of the chromosomes initially present is now composed of two copies called chromatids. These chromosomes (paired chromatids) then pair with the homologous chromosome (also paired chromatids) present in the same nucleus ...