BI 107Meiosis student

BI 107Meiosis student - Meiosis Meiosis BI 107 Dr Potter...

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7/14/2010 1 Meiosis BI 107 Dr Potter Meiosis Mitosis Asexual reproduction No genetic variation Meiosis – Part of sexual reproduction leading to extensive genetic variation in next generation Meiosis Homologous chromosomes = pairs – 1 maternal and 1 paternal – Same genes in same sequence – Humans -> 46 chromosomes = 23 pairs Meiosis Diploid: Contains all pairs of chromosomes 2 sets of chromosomes (1 mat, 1 pat) Haploid: Contains only one of each pair 1 set of chromosomes Meiosis Sexual reproduction (plants and animals) – Requires two parents – Each contributing a haploid gamete (egg, sperm sperm) – Fertilization • unites two haploid gametes to produce diploid offspring that is a combination of genetic information from the two parents = genetic variation Meiosis Sexual reproduction – Meiosis • formation of haploid gametes (spores in plants) – Fertilization • union of haploid sperm with haploid egg • forms diploid zygote – Embryo development • via mitosis
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This note was uploaded on 11/04/2011 for the course BI 107 taught by Professor Fuller during the Spring '08 term at Montgomery College.

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BI 107Meiosis student - Meiosis Meiosis BI 107 Dr Potter...

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