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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. File:Meiosis Stages.svg - Wikipedia

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

    This image has been assessed under the valued image criteria and is considered the most valued image on Commons within the scope: Biology diagrams, Biology diagrams, and Meiosis. You can see its nomination here .

  4. 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.

  5. Prophase - Wikipedia

    en.wikipedia.org/wiki/Prophase

    Meiosis involves two rounds of chromosome segregation and thus undergoes prophase twice, resulting in prophase I and prophase II. [12] Prophase I is the most complex phase in all of meiosis because homologous chromosomes must pair and exchange genetic information. [3]: 98 Prophase II is very similar to mitotic prophase. [12]

  6. Cell division - Wikipedia

    en.wikipedia.org/wiki/Cell_division

    Interphase is the process through which a cell must go before mitosis, meiosis, and cytokinesis. [15] Interphase consists of three main phases: G 1, S, and G 2. G 1 is a time of growth for the cell where specialized cellular functions occur in order to prepare the cell for DNA replication. [16]

  7. Nondisjunction - Wikipedia

    en.wikipedia.org/wiki/Nondisjunction

    In general, nondisjunction can occur in any form of cell division that involves ordered distribution of chromosomal material. Higher animals have three distinct forms of such cell divisions: Meiosis I and meiosis II are specialized forms of cell division occurring during generation of gametes (eggs and sperm) for sexual reproduction, mitosis is the form of cell division used by all other cells ...

  8. Zygotene - Wikipedia

    en.wikipedia.org/wiki/Zygotene

    Zygotene (from greek "paired threads" [1]) is the second stage of prophase I during meiosis, the specialized cell division that reduces the chromosome number by half to produce haploid gametes. It follows the Leptotene stage and is followed by Pachytene stage.

  9. Pachytene - Wikipedia

    en.wikipedia.org/wiki/Pachytene

    Homologous recombination is the principal mechanism of DNA repair acting during meiosis. From the leptotene to early pachytene stages of meiosis exogenous damage triggered the massive presence of gamma H2AX (which forms when DNA double-strand breaks appear), H2AX was present throughout the nucleus, and this was associated with DNA repair ...