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Copyright © 2009 Pearson Education, Inc.
Chapter 7 Lecture
Concepts of GeneticsTenth Edition
Sex Determination and Sex Chromosomes
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Caster Semenya
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7.1 Life Cycles Depend on Sexual Differentiation
7.1.1 Chlamydomonas
Copyright © 2009 Pearson Education, Inc. Figure 7.1
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7.1 Life Cycles Depend on Sexual Differentiation
7.1.3 Caenorhabditis elegans
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7.2 X and Y Chromosomes Were First Linked to Sex Determination Early in the Twentieth Century
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7.3 The Y Chromosome Determines Maleness in Humans
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7.3 The Y Chromosome Determines Maleness in Humans
7.3.1 Klinefelter and Turner Syndromes
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7.3 The Y Chromosome Determines Maleness in Humans
7.3.2 47,XXX Syndrome
7.3.3 47,XYY Condition
7.3.4 Sexual Differentiation in Humans
7.3.5 The Y Chromosome and Male Development
Copyright © 2009 Pearson Education, Inc. Table 7.1
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7.4 The Ratio of Males to Females in Humans Is Not 1.0
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7.5 Dosage Compensation Prevents Excessive Expression of X-Linked Genes in Humans and Other Mammals
7.5.1 Barr Bodies
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7.5 Dosage Compensation Prevents Excessive Expression of X-Linked Genes in Humans and Other Mammals
7.5.2 The Lyon Hypothesis
Copyright © 2009 Pearson Education, Inc. Figure 7.10
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7.5 Dosage Compensation Prevents Excessive Expression of X-Linked Genes in Humans and Other Mammals
7.5.3 The Mechanism of Inactivation
Copyright © 2009 Pearson Education, Inc. Figure 7.11
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7.6 The Ratio of X Chromosomes to Sets of Autosomes Determines Sex in Drosophila
Copyright © 2009 Pearson Education, Inc. Figure 7.12
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7.6 The Ratio of X Chromosomes to Sets of Autosomes Determines Sex in Drosophila
7.6.1 Dosage Compensation in Drosophila
7.6.2 Drosophila Mosaics
Copyright © 2009 Pearson Education, Inc. Figure 7.13
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7.7 Temperature Variation Controls Sex Determination in Reptiles
Copyright © 2009 Pearson Education, Inc. Figure 7.15
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