2005_campbl13

2005_campbl13 - Chapter 13: Meiosis and Sexual Cycles...

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Chapter 13: Meiosis and Sexual Cycles
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Important Point:
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Asexual Reproduction Created by mitosis alone (awww, a little baby clone)
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Homologous Chromosome Pairs Eukaryote chromosomes come in pairs (homologues) Normal humans have 46 chromosomes in 23 pairs One chromosome of each pair comes from an individual’s mother, the other comes from their father Homologous chromosomes (chromosome pairs) carry genes that control the same Characters, e.g., eye color, blood type, flower color, height, etc. Homologous chromosomes have nearly identical structure, banding patterns, and nucleotide sequences Locus: Physical site on chromosomes where given gene is located Allele: Different forms of the same gene, e.g., A, B, or O blood-type alleles
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Diploidy
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Autosomes and Sex Chromosomes Autosomes: Found in both males and females In humans there are 22 pairs of autosomes Autosomes that are the same size (& structure) are called homologues Sex Chromosomes: Determine an individual’s
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2005_campbl13 - Chapter 13: Meiosis and Sexual Cycles...

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