150-12sexualreproduction[1]

150-12sexualreproduction[1] - Foundations of Biological...

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Foundations of Biological Science I (BioSci 150) C Sexual Reproduction: cell division that separates homologous chromosomes: Meiosis & Recombination Genetic Diversity
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Foundations of Biological Science I (BioSci 150) C Genes inform a character (e.g., eye color) Alleles are different versions of the same gene on homologous chromosomes (e.g., for green vs blue eye color) . Check out websites on Useful Links in D2L Genes vs alleles If both parents have blue eyes, what color will their baby’s eyes be?
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Foundations of Biological Science I (BioSci 150) C Meiosis: two special cell divisions by germ line cells Sister chromatids 2N ( diploid ) germ cell 1. Replicated chromosomes form sister chromatids . early prophase I MEIOSIS I: Homologous chromosomes separate. 2. Potential for X- over of non-sister chromatids. late prophase I 3. Tetrads migrate to middle of cell. metaphase I 4. Homologs separate. anaphase I>> chiasmata Synapsis forms tetrads (4 chromatids from homologous chromosomes)
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Foundations of Biological Science I (BioSci 150) C MEIOSIS II: Sister chromatids separate 6. Chromosomes begin moving to middle of cell. 7. Chromosomes
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This note was uploaded on 04/17/2008 for the course BIO SCI 150 taught by Professor Geraldbergstrom during the Fall '08 term at Wisconsin Milwaukee.

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150-12sexualreproduction[1] - Foundations of Biological...

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