Ch10.2Meisosis

Ch10.2Meisosis - Meiosis & Genetics Sexual Cell...

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Sexual Cell Reproduction Ch. 10.2
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Genetics The Study of Inherited Characteristics
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Chromosome DNA Code for traits
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Genes on chromosomes : Segments of DNA on a chromosome Code for a trait Hair Color Eye Color
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Gene Segment For Hair color
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Trait Characteristic Feature Variations in a population
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Chromosome Number Different # for different species Full set = 2N= Diploid N= # pairs 1 pair from mother 1 pair from father Humans= 23 pairs or 46 total Homologous Chromosomes are the sets of each pair
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Autosomes = # 1- 22 for all traits except sex Sex chromosomes= Pair # 23 XX(female) or XY(male)
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Why do cells divide by Meiosis ? To reduce chromosome number In sex cells Or in single celled organisms: Under changing conditions for Chromosome Variety Sperm N egg N 2N baby
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Testes
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This note was uploaded on 11/13/2011 for the course BIO 100 taught by Professor Robinson during the Winter '08 term at BYU.

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Ch10.2Meisosis - Meiosis & Genetics Sexual Cell...

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