0921 - 7. Meiosis Accomplished by TWO cell divisions:...

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7. Meiosis Accomplished by TWO cell divisions: During the first cell division: homologous pairs of chromosomes separate These are homologous pairs, paired because one came from each parent of this individual These are homologous pairs, each with a duplicate, resulting from DNA replication as occurs before each cell division These are homologous pairs, each having gone into a different cell at the end of meiosis I
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During the Second cell division the chromosomes & their copies separate These are now single chromosomes and their duplicate (they were just ½ of a homologous pair) before meiosis I The chromosomes and their duplicate now separate and begin to move to 2 new separate cells These are the four cells produced during meiosis – each is a gamete (egg or sperm) and will combine with another gamete during sexual reproduction Each gamete contains only ONE chromosome and only ONE version of each gene (these cells are haploid)
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Mendelian Genetics - Chapter 11 1. Hereditary traits
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This note was uploaded on 11/07/2009 for the course BIO 101 taught by Professor Wetherbee during the Fall '08 term at Rhode Island.

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0921 - 7. Meiosis Accomplished by TWO cell divisions:...

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