Lec19+2010 - Lecture 19: Chromosomes & inheritance Friday...

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Lecture 19: Chromosomes & inheritance 19-1 Reading: Ch. 15, pp. 286-300 Self quiz Ch. 15: 6, 8, 14 Fall 2010, Bio 93, O’Dowd and Warrior, UCI - Copyright: All rights reserved Friday 11/05/10
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Chromosomal basis of Mendel’s Laws Fig. 15.2 Fall 2010, Bio 93, O’Dowd and Warrior, UCI - Copyright: All rights reserved 19-2
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Human Vision and Genetics Cone cells in retina detect colors Mutations affect color perception Between 5-8% of Caucasian MEN and 0.5% of WOMEN are born color blind. Fall 2010, Bio 93, O’Dowd and Warrior, UCI - Copyright: All rights reserved 19-3 Why the gender inequality?
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Sex is determined through the X-Y system in mammals Fig. 15.7 Fall 2010, Bio 93, O’Dowd and Warrior, UCI - Copyright: All rights reserved 19-4 But, X and Y chromosomes also have genes for characters unrelated to gender
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Sex- (X-)linked genes have unique patterns of inheritance Fig. 15.8 Fall 2010, Bio 93, O’Dowd and Warrior, UCI - Copyright: All rights reserved 19-5 Are you color blind? Blame your mother
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Females inherit 2 X-chromosomes, but only need 1 active chromosome During development, 1 X-chromosome condenses into a Barr body Female heterozygotes will be a
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This note was uploaded on 01/25/2011 for the course CHEM 1LB taught by Professor Edwards during the Fall '08 term at UC Irvine.

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Lec19+2010 - Lecture 19: Chromosomes & inheritance Friday...

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