GENETICS(LL)-W/CONNECT >CUSTOM<
6th Edition
ISBN: 9781260571561
Author: HARTWELL
Publisher: MCG CUSTOM
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Textbook Question
Chapter 5, Problem 39P
A cross was performed between one haploid strain of yeast with the genotype a f g and another haploid strain with the genotype α f+ g+ (a and α are mating types). The resulting diploid was sporulated, and a random sample of 101 of the resulting haploid spores was analyzed. The following genotypic frequencies were seen:
α f+ g+ | 31 |
a f g | 29 |
a f+ g+ | 14 |
α f g | 13 |
a f+ g | 6 |
α f g+ | 6 |
a f+ g+ | 1 |
α f g | 1 |
a. | Map the loci involved in the cross. |
b. | Assuming all three genes are on the same chromosome arm, is it possible that a particular ascus could contain an α f g spore but not an a f g spore? If so, draw a meiosis that could generate such an ascus. |
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Chapter 5 Solutions
GENETICS(LL)-W/CONNECT >CUSTOM<
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