Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 14, Problem 19TYPSS
Summary Introduction
To review:
The results of the cross between two Drosophila melanogaster with long wings and red eyes—the wild type
(a) Determine the curved-wing allele autosomal recessive, autosomal dominant, sex-linked recessive, or sex-linked dominant.
(b) Determine the lozenge-eyed allele autosomal recessive, autosomal dominant, sex-linked recessive, or sex-linked dominant.
(c) The genotype of the female parent.
(d) The genotype of the male parent.
Introduction:
Drosophila melanogaster are the fly species that are also known as vinegar fly. Further, due to the accessible features of the Drosophila, it is used as a model system extensively used in laboratories for the research purpose. The results of the cross between two Drosophila melanogaster with long wings and red eyes—the wild type phenotype is given in table below.
| Females | Males |
| 600 long wings, red eyes | 300 long wings, red eyes |
| 200 curved wings, red eyes | 100 curved wings, red eyes |
| 300 long wings, lozenge eyes | |
| 100 curved wings, lozenge eyes |
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Students have asked these similar questions
Female drosophila heterozygous for ebony (e+/e), scarlet (st+/st) and spineless (ss+/ss) were test crossed and the following progeny were obtained
Wild type 67
Ebony 8
Ebony, scarlet 68
Ebony, spineless 347
Ebony, scarlet, spineless 78
Scarlet 368
Scarlet, spineless 10
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Are these genes linked? Justify your answer with a chi square test
Write the genotypes of the flies involved in the parental cross and test cross
What is the map distance between the loci for ebony and scarlet?
What is the map distance between the loci for ebony and spineless?
What is the correct order of the genes on the chromosome?
Calculate the coefficient of coincidence and the interference
In Drosophila fruit flies, the genes for warped wings (dwp), rumpled bristles (rmp), and pallid wings (pld) are linked. A trihybrid female for all three allleles is crossed with homozygous recessive male for all three alleles and the offspring obtained showed the following phenotypes:
3 pld rmp dwp
428 pld rmp +
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48 + rmp +
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23 pld + +
2 + + +
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You are doing a cross with Drosophila using the following two traits. Curly wings is dominant over straight wings, and round eyes is dominant over elliptical eyes. You cross a female fly that is known to be heterozygous for both genes with a male that is heterozygous for the wing gene but has elliptical eyes. This cross produces 74 flies with curly wings and round eyes, 61 with curly wings and elliptical eyes, 24 with straight wings and round eyes, and 21 with straight wing and elliptical eyes. Calculate the expected phenotype ratios for this cross, then use the chi-square test to see if the observed data are consistent with the expected numbers.
Chapter 14 Solutions
Biological Science (6th Edition)
Ch. 14 - 1. The genes for the trails that Mendel worked...Ch. 14 - 2. CAUTION Why is the pea wrinkled-seed allele a...Ch. 14 - Prob. 3TYKCh. 14 - 4. Mendel’s rules do not correctly predict...Ch. 14 - Prob. 5TYKCh. 14 - Prob. 6TYKCh. 14 - Example Problem Two black female mice are crossed...Ch. 14 - Prob. 8TYKCh. 14 - Prob. 9TYPSSCh. 14 - Prob. 10TYPSS
Ch. 14 - 11. In garden peas, yellow seeds (Y) are dominant...Ch. 14 - Prob. 12TYPSSCh. 14 - The smooth feathers on the back of the neck in...Ch. 14 - SOCIETY As a genetic counselor, you advise couples...Ch. 14 - 15. Suppose you are heterozygous for two genes...Ch. 14 - Suppose a woman with blood type O married a man...Ch. 14 - Prob. 17TYPSSCh. 14 - Society Two mothers give birth to sons at the same...Ch. 14 - Prob. 19TYPSSCh. 14 - QUANTITATIVE Recall that hemophilia is an X-linked...Ch. 14 - Prob. 21PIATCh. 14 - Given the pedigree, what is the most likely mode...Ch. 14 - Prob. 23PIATCh. 14 - QUANTITATIVE If the son with ALD in the third...Ch. 14 - Prob. 25PIATCh. 14 - Prob. 26PIAT
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