In mice, the a mutation results in albino mice, while mice with at least one copy of the A allele are brown. The t mutation causes short tails, while mice with at least one copy of the T allele have long tails. Doubly heterozygous F1 mice are testcrossed to albino short-tailed mice, and the 1000 progeny have the following phenotypes: 442 offspring are albino with long tails 458 offspring are brown with short tails 46 offspring are albino with short tails 54 offspring are brown with long tails You do a chi-square test on the above four phenotypic classes to compare the observed numbers to those expected under independent assortment, and obtain a chi-square value of 640.64. Using the chi-square table shown here and a p-value of 0.05 to determine significance, which of the following do you conclude?
In mice, the a mutation results in albino mice, while mice with at least one copy of the A allele are brown. The t mutation causes short tails, while mice with at least one copy of the T allele have long tails. Doubly heterozygous F1 mice are testcrossed to albino short-tailed mice, and the 1000 progeny have the following phenotypes: 442 offspring are albino with long tails 458 offspring are brown with short tails 46 offspring are albino with short tails 54 offspring are brown with long tails You do a chi-square test on the above four phenotypic classes to compare the observed numbers to those expected under independent assortment, and obtain a chi-square value of 640.64. Using the chi-square table shown here and a p-value of 0.05 to determine significance, which of the following do you conclude?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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a
b
C
The data do not deviate significantly from the expected values, providing evidence that the genes assort independently.
The data do not deviate significantly from the expected values, providing evidence that the genes are linked.
The data deviate significantly from the expected values, providing evidence that the genes do not show independent
assortment and are linked on the same chromosome.
The data deviate significantly from the expected values, providing evidence that the genes are not linked on the same
chromosome.
Transcribed Image Text:In mice, the a mutation results in albino mice, while mice with at least one copy of the A allele are brown. The t mutation causes
short tails, while mice with at least one copy of the T allele have long tails. Doubly heterozygous F1 mice are testcrossed to albino
short-tailed mice, and the 1000 progeny have the following phenotypes:
442 offspring are albino with long tails
458 offspring are brown with short tails
46 offspring are albino with short tails
54 offspring are brown with long tails
You do a chi-square test on the above four phenotypic classes to compare the observed numbers to those expected under
independent assortment, and obtain a chi-square value of 640.64. Using the chi-square table shown here and a p-value of 0.05 to
determine significance, which of the following do you conclude?
Table 2.4 The Chi-Square Table
Probability (P) Value
0.90
0.016
0.21
0.58
1.06
1.61
2.20
2.83
3.49
4.17
4.87
5.58
6.30
7.04
7.79
8.55
df
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0.95
0.004
0.10
0.35
0.71
1.15
1.64
2.17
2.73
3.33
3.94
4.58
5.23
5.89
6.57
7.26
0.50
0.46
1.39
2.37
3.36
4.35
5.35
6.35
7.34
8.34
9.34
10.34
11.34
12.34
13.34
14.34
0.70
0.30
0.15
1.07
0.71
2.41
1.42
3.67
2.20
4.88
3.00
6.06
3.83
7.23
4.67
8.38
5.53
9.52
6.39
10.66
7.27
11.78
8.15
12.90
9.03
14.01
9.93
15.12
10.82
16.22
11.72
17.32
Fail to reject chance hypothesis
0.20
1.64
3.22
4.64
5.99
7.29
8.56
9.80
11.03
12.24
13.44
14.63
15.81
16.99
18.15
19.31
0.10
2.17
4.61
6.25
7.78
9.24
10.65
12.02
13.36
14.68
15.99
17.28
18.55
19.81
21.06
22.31
0.05
3.84
5.99
7.82
9.49
11.07
12.59
14.07
15.51
16.92
18.31
19.68
21.03
22.36
23.69
25.00
0.01
6.64
9.21
11.35
13.28
15.09
16.81
18.48
20.09
21.67
23.21
24.73
26.22
27.69
29.14
30.58
0.001
10.83
13.82
16.27
18.47
20.52
22.46
24.32
26.13
27.88
29.59
31.26
32.91
34.53
36.12
37.70
Reject chance hypothesis
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