Thursday, March 8, 2012

Independent Assortment

I discovered the mechanics of meiosis and the different phases and divisions. In the first meiotic division, homologous chromosomes pair up and align at the middle of the cell. The two pairs are set apart from each side of the cell, and are lined up at no particular order or reason. Because of this, when the pairs separate during meiosis 1, each half moves apart from each other opposite poles of the cell, creating random chromosomes and alleles for each new daughter cell.

Now Mendel's second law does not appply to all genes. When genes are linked they are laid close together on the same chromosome, they are more likely to go through meiosis phase. Thats why linked genes do not assort on their own. However, if the genes are located on different chromosomes they can assort independently. Two genese that are far apart from each other on the same chromosome, when ther cross over they usually unlink the genes and their you can independent assorting.

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