In Drosophila, yellow bodies (y) and white eyes (w) are both caused by recessive X-linked alleles. The normal alleles (y* amd w*) cause tan bodies and red eyes, respectively. A yw female is mated to a y* w* male and the F₁ progeny are allowed to mate with each other. Two hundred F2 were observed and they are: 55 yw; 45 y w*; 45 y* w; 55 y* w*. What is the chi-square value for the test for goodness of fit of the null hypothesis of no linkage? (Recall that the chi- square statistic is the sum, for all classes, of (O-E)²/E.) O ● 10 0.5 20 1.0 0.4 2.0
In Drosophila, yellow bodies (y) and white eyes (w) are both caused by recessive X-linked alleles. The normal alleles (y* amd w*) cause tan bodies and red eyes, respectively. A yw female is mated to a y* w* male and the F₁ progeny are allowed to mate with each other. Two hundred F2 were observed and they are: 55 yw; 45 y w*; 45 y* w; 55 y* w*. What is the chi-square value for the test for goodness of fit of the null hypothesis of no linkage? (Recall that the chi- square statistic is the sum, for all classes, of (O-E)²/E.) O ● 10 0.5 20 1.0 0.4 2.0
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter13: Genes, Chromosomes, And Human Genetics
Section: Chapter Questions
Problem 8TYK: Another gene in Drosophila determines wing length. The dominant wild-type allele of this gene...
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Transcribed Image Text:In Drosophila, yellow bodies (y) and white eyes (w)
are both caused by recessive X-linked alleles. The
normal alleles (y amd w*) cause tan bodies and red
eyes, respectively. A yw female is mated to
a y* w* male and the F₁ progeny are allowed to mate
with each other. Two hundred F2 were observed and
they are: 55 y w; 45 y w*; 45 y* w; 55 y* w*. What is
the chi-square value for the test for goodness of fit of
the null hypothesis of no linkage? (Recall that the chi-
square statistic is the sum, for all classes, of (O-E)²/E.)
O
O
O
10
0.5
20
1.0
0.4
2.0
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