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Chapter 7 Lecture. Concepts of Genetics Tenth Edition. Sex Determination and Sex Chromosomes. Caster Semenya. 7.1 Life Cycles Depend on Sexual Differentiation 7.1.1 Chlamydomonas. Figure 7.1. Figure 7.2. 7.1 Life Cycles Depend on Sexual Differentiation 7.1.3 Caenorhabditis elegans. - PowerPoint PPT Presentation

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Copyright © 2009 Pearson Education, Inc.

Chapter 7 Lecture

Concepts of GeneticsTenth Edition

Sex Determination and Sex Chromosomes

Copyright © 2009 Pearson Education, Inc.

Caster Semenya

Copyright © 2009 Pearson Education, Inc.

7.1 Life Cycles Depend on Sexual Differentiation

7.1.1 Chlamydomonas

Copyright © 2009 Pearson Education, Inc. Figure 7.1

Copyright © 2009 Pearson Education, Inc.

Copyright © 2009 Pearson Education, Inc. Figure 7.2

Copyright © 2009 Pearson Education, Inc.

7.1 Life Cycles Depend on Sexual Differentiation

7.1.3 Caenorhabditis elegans

Copyright © 2009 Pearson Education, Inc. Figure 7.3

Copyright © 2009 Pearson Education, Inc.

7.2 X and Y Chromosomes Were First Linked to Sex Determination Early in the Twentieth Century

Copyright © 2009 Pearson Education, Inc. Figure 7.4

Copyright © 2009 Pearson Education, Inc.

Copyright © 2009 Pearson Education, Inc.

Copyright © 2009 Pearson Education, Inc.

7.3 The Y Chromosome Determines Maleness in Humans

Copyright © 2009 Pearson Education, Inc. Figure 7.5

Copyright © 2009 Pearson Education, Inc. Figure 7.5a

Copyright © 2009 Pearson Education, Inc. Figure 7.5b

Copyright © 2009 Pearson Education, Inc.

7.3 The Y Chromosome Determines Maleness in Humans

7.3.1 Klinefelter and Turner Syndromes

Copyright © 2009 Pearson Education, Inc. Figure 7.6a

Copyright © 2009 Pearson Education, Inc. Figure 7.6b

Copyright © 2009 Pearson Education, Inc.

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

Copyright © 2009 Pearson Education, Inc.

Copyright © 2009 Pearson Education, Inc. Figure 7.7

Copyright © 2009 Pearson Education, Inc.

Copyright © 2009 Pearson Education, Inc.

7.4 The Ratio of Males to Females in Humans Is Not 1.0

Copyright © 2009 Pearson Education, Inc.

7.5 Dosage Compensation Prevents Excessive Expression of X-Linked Genes in Humans and Other Mammals

7.5.1 Barr Bodies

Copyright © 2009 Pearson Education, Inc. Figure 7.8

Copyright © 2009 Pearson Education, Inc. Figure 7.9

Copyright © 2009 Pearson Education, Inc.

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

Copyright © 2009 Pearson Education, Inc.

Copyright © 2009 Pearson Education, Inc.

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

Copyright © 2009 Pearson Education, Inc.

7.6 The Ratio of X Chromosomes to Sets of Autosomes Determines Sex in Drosophila

Copyright © 2009 Pearson Education, Inc. Figure 7.12

Copyright © 2009 Pearson Education, Inc.

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

Copyright © 2009 Pearson Education, Inc. Figure 7.14

Copyright © 2009 Pearson Education, Inc.

7.7 Temperature Variation Controls Sex Determination in Reptiles

Copyright © 2009 Pearson Education, Inc. Figure 7.15

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