AP Biology Meiosis Essay

meiosis is the operation in sexually reproducing organisms where stalls divide. The electric cells produced during reduction division have i-half the chromosome number as the original cell. There argon deuce cell divisions in litotes, meiosis l and meiosis ll. These cell divisions produce 4 hapolid daughter cells. Haploid cells stock only wiz set of chromosomes, which is written as n. Meiosis consists of nine phases. In meiosis the interphase l the chromosomes replicate and the central body duplicates in one diploid cell. Diploid cells have two sets of chromosomes, they received one from from each one parent. During prophase l the thermonuclear envelope fragments and spindle microtubules form betwixt the centrosomes. Homologous chromosomes parallel to make two baby chromatids. This is called synapsis. Chromatids of homologous pairs exchange segments when they campana ringer all over. At metaphase l, the pairs line up on the metaphase dental plate. Microtubules from o ne perch attach to the kinetochore of one homologous chromosome, speckle microtubules from the other pole attach to the kinetochore of the other pair. During anaphase l the microtubules bum shorter pulling the homologous pairs towards opposite poles. At telophase l two haploid cells form exactly the chromosomes are facilitate double. Meiosis ll separates the sister chromatids. During prophase ll the sister chromatids in each cell begin moving towards the equator. At metaphase ll the chromosomes align on the metaphase plate in each cell. The process of anaphase ll pulls the sister chromosomes to opposite poles in each cell.

During telophase ll each cell f! orms a nuclei and cytokinesis splits the cells apart. Four genetically different haploid cells are produced. Independent assortment is differences amidst the genes. adaptation can occur in meiosis when the chromosomes cross over and during stochastic fertilization. Random fertilization is when a gamete from the mother unites with the haploid from the father to produce... It was quite informative, but you should fix the layout of your text because it is cranky to read it when the distances between the sentences is big. You should also have a outcome and introduction. Otherwise it was ok If you want to get a adequate essay, order it on our website: OrderCustomPaper.com

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