Wednesday, February 5, 2014

Meiosis

Meiosis is a type of cell division handle for sexual reproduction and produces gametes or spores. During Meiosis I, desoxyribonucleic acid fruitful memory occurs and chromosomes line up on the equator as a homologic mates cognize as chromatids. At the branch pegleg of Meiosis, Prophase I, DNA of soulfulness chromosomes coils more and more tightly, known as DNA condensation. Sister chromatids then attach to particularized sites on the nuclear envelope to bring the homologic duo of chromosomes closelipped together. The infant chromatids line up so they elicit pair up with its corresponding sister gene on the homologous chromosome. Next the process of crossing over exchanges the homologous sister chromatids that form the paired DNA strands. This involves the separation of the DNA duplicate helix in angiotensin converting enzyme paternal and adept parental chromatid and joining of the respective ends. At the end of myosis I, separately chromosome is still composed o f devil chromatids held together by a particular DNA sequence called the centromere. Gregor Mendel came up with two legal philosophys pursuit his experiment on pea plants. The first law of nature is called The practice of law of Segregation is when two coexisting alleles of an individual for separately indication segregate during gamete formation so that each gamete gets exactly one of the two alleles. Alleles again unite at random fertilisation of gametes. Mendels Pea Experiment showed that a cross surrounded by a green seed seedcase plant and a discolor pod plant produced only green pod plants for the F1 times. It appeared that the discolour pod characteristic had disappeared. However, the F2 generation threw up an unexpected way out; the yellow pod variant appeared in a low-down of this generation which proved his law correct. The second law is called The rightfulness of Independent multifariousness. This occurs in Meiosis I in euk aryotic organisms in the anaphase stage and ! produces a gamete with an assortment of the organisms motherly and paternal chromosomes. The law states that separate genes for separate traits are passed...If you inadequacy to get a full essay, order it on our website: OrderEssay.net

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