In meiotic prophase I, homologous chromosomes pair through synapsis, forming tetrads (four chromatids). A chiasma is where non-sister chromatids break and exchange DNA during crossing over.
Durante la profase I della meiosi, i cromosomi omologhi si appaiano tramite sinapsi, formando tetradi (quattro cromatidi). Il chiasma è il punto di rottura e scambio di DNA tra cromatidi non fratelli durante questo processo, noto come crossing over.
| Text | Meiosis: During prophase I homologous chromosomes intertwine in synapsis; each synaptic pair contains four chromatids called a tetrad Meiosis, Prophase I: that point where chromatids break during the synapsis is called the chiasma or chiasmata(p) & exchange pieces of DNA; the process is called crossing over; never between sister chromatids |
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Tags: biology_2
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