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Genetics handout week 5

Genetics handout week 5 - Greg Tyson [email protected] OH...

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Greg Tyson [email protected] OH: Mondays 5-6, York 3010B Week 5 Handout 1. _________ is a decrease or increase of one chromosome, while _________ is an increase in the number of haploid sets of chromosomes. 2. Aneuploidy results mainly from the process of ________ in which chromosomes fail to segregate correctly. True/False: Trisomy is where an organism has 3 haploid sets of chromosomes (3n). Down’s resulting from nondisjunction is caused by _________ ____. This is caused by nondisjunction in meiosis I or II? 3. Nondisjunction is more serious for (mitosis/meiosis) and why? Turner’s syndrome (XO) results from nondisjunction in the male or female gametogenesis? What about for Klinefelter syndrome (XXY)? In meiosis I or II? Your friend calls himself “superman” and says he is YY and doesn’t need any of those girly X chromosomes. Do you believe him? A person with Klinefelter Syndrome got it due to nondisjunction in forming his dad’s gametes. Was the aneuploidy due to nondisjunction in meiosis I or II?
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Genetics handout week 5 - Greg Tyson [email protected] OH...

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