Genetics handout week 8

Genetics handout week 8 - Greg Tyson gtyson@ucsd.edu Week 8...

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Greg Tyson gtyson@ucsd.edu Week 8 handout (Ch.4 problems: 3-9, 13, 14, 16, 17, 23-27, 29-31, 33-38, 40, 41 1. For grasshoppers, the sex chromosomes for females are ____ while for males are ____. 2. For birds and fish sex chromosomes, females are (homogametic/heterogametic) with genotype ____, while males are (homogametic/heterogametic) and _____. 3. Bees, wasps, and ants have how many sex chromosomes?____. Their basis of sex determination is called ____________. Females are ________ while males are ________. A male’s sperm arises through (mitosis/meiosis). 4. In slipper limpets, the first larva settles and becomes _______. The larvae recruited onto the first larva become _______. This repeats itself as the stack gets bigger. 5. In drosophila, sex is determined by ______ _________. This means that it is based on the ratio of number of ____________ to __________. A 1:1 ratio is a _________ while a 0.5:1 ratio is for a _______. 6. ________ ____________ is what ensures that different numbers of X chromosomes in
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Genetics handout week 8 - Greg Tyson gtyson@ucsd.edu Week 8...

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