meiosis and mitosis

meiosis and mitosis - The Basics Meiosis and Mitosis...

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The Basics – Meiosis and Mitosis Somatic cell: Any cell of a multicellular organism that composes the body of that organism but does not produce gametes. Gamete: A mature reproductive cell which is capable of fusing with a cell of similar origin but of opposite sex to form a zygote from which a new organism can develop. Gametes have a haploid chromosome content. In animals, a gamete is a sperm or egg; in plants, it is pollen, spermatic nucleous, or ovum. Chromatin: material found in the eukaryotic nucleus consists of DNA and proteins Chromosomes: A nucleosome and an H1 histone protein. Chromatids: each of the two daughter strands comprising a duplicated chromosome. The term remains in use while the two chromatids are still joined at the centromere. As soon as the centromere divides, setting the two chromatids adrift (during anaphase of mitosis; and during anaphase II of meiosis), they are called chromosomes. Autosomes vs. sex chromosomes:
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This note was uploaded on 04/02/2008 for the course GENE 302 taught by Professor Polymenis during the Spring '08 term at Texas A&M.

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