Please write a 150 word summary on meiosis I Please write a

Solution

Meiosis I

Meiosis I : it segregates homologous chromosomes, which are joined as tetrads(2n, 4c), delivering two haploid cells (n chromosomes,) which each contain chromatid sets (1n, 2c). Since the ploidy is decreased from diploid to haploid, meiosis I is alluded to as a reductional division.

Amid prophase I, events are the same as in prophase of mitosis except homologous chromosomes experience synapsis and cross over.

It is normally the longest period of meiosis and homologous chromosomes combine and DNA undergoes homologous recombination.

The combined and duplicated chromosomes are called bivalents or quadruplicates, which have two chromosomes and four chromatids, with one chromosome originating from each parent.

The way toward matching the homologous chromosomes is called synapsis.

At this stage, non-sister chromatids may traverse at focuses called chiasmata

It includes sub pahses Leptotene, Zygotene Pachytene , Diplotene and Diakinesis

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At metaphase I, q tetrads line up at the equator

Amid mitosis, homologous chromosome don\'t combine up

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Amid anaphase I, separation homologous chromosomes .

Amid mitosis, sister chromatids split, however in meiosis I, the chromosomes stay in place

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Amid telophase I, nuclear envelope reforms around the haploid number of chromosomes of cell