Genetic Analysis: An Integrated Approach (2nd Edition)
2nd Edition
ISBN: 9780321948908
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 3, Problem 14P
A wild-type male and a wild-type female Drosophila with red eyes and full wings are crossed. Their progeny are shown below.
a. Using clearly defined allele symbols of your choice, give the genotype of each parent.
b. What is/are the genotype(s) of females with purple eye? Of males with purple eye and miniature wing?
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In Drosophila, the gene for wing type is known to be autosomal with vestigial wings (vg) known to the recessive to normal, long wings (+). You are already familiar with the white eye gene (w) from lecture with the normal color being red (+). Answer the following questions assuming an initial cross (P1) between a pure breeding white eyed, long winged female and a pure breeding red eyed vestigial winged male.
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c) What would the phenotypes and phenotypic ratios would occur in F2 generation?
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Identify the genotype of the white guinea pig. ________
Identify the genotype of the yellow guinea pig. ________
Identify the genotype of the cream-colored guinea pig. ________
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Give the genotypic ratio. __________________
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The fly with vestigial wings is crossed with the fly with normal wings shown in the upper-right corner of the figure. If the progeny are reared at 31°C, what percentage will have vestigial wings?
Chapter 3 Solutions
Genetic Analysis: An Integrated Approach (2nd Edition)
Ch. 3 - Examine the following diagrams of cells from an...Ch. 3 - Our closest primate relative, the chimpanzee, has...Ch. 3 -
3. In a test of his chromosome theory of...Ch. 3 - Cohesion between sister chromatids, as well as...Ch. 3 - 5. The diploid number of the hypothetical animal...Ch. 3 - 6. An organism has alleles R1 and R2 on one pair...Ch. 3 - Explain how the behavior of homologous chromosomes...Ch. 3 - 8. Suppose crossover occurs between the homologous...Ch. 3 -
9. Alleles A and a are on one pair of autosomes,...Ch. 3 - Prob. 10P
Ch. 3 - Describe the role of the following structures or...Ch. 3 - A womans father has ornithine transcarbamylase...Ch. 3 - In humans, hemophilia A (OMIM 306700) is an...Ch. 3 -
14. A wild-type male and a wild-type female...Ch. 3 - 15. A woman with severe discoloration of her tooth...Ch. 3 - 16. In a large metropolitan hospital, cells from...Ch. 3 - In cats, tortoiseshell coat color appears in...Ch. 3 - 18. The gene causing Coffin–Lowry syndrome (OMIM...Ch. 3 - 19. Four eye-color mutants in Drosophila—apricot,...Ch. 3 - 20. For each pedigree shown,
a. Identify which...Ch. 3 - 21. Use the blank pedigrees provided to depict...Ch. 3 - 22. Figure 3.22 (page 89) illustrates reciprocal...Ch. 3 - 23. In fruit flies, yellow body (y) is recessive...Ch. 3 - 24. In a species of fish, a black spot on the...Ch. 3 - LeschNyhan syndrome (OMIM 300322) is a rare...Ch. 3 - 26. In humans, SRY is located near a...Ch. 3 - 27. In an 1889 book titled Natural Inheritance...Ch. 3 - 30. Drosophila has a diploid chromosome number of...Ch. 3 - 29. A wild-type Drosophila male and female are...Ch. 3 - 28. In Drosophila, the X-linked echinus eye...Ch. 3 - 31. While examining a young tortoiseshell cat, you...Ch. 3 - 32. Redgreen color blindness in humans is...
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