In Drosophila, a female with three recessive traits, miniature wings, (m), ebony body (e) and rough eyes (r) were crossed with true- breeding wild-type males. In the F₁, all offspring had wild-type phenotypes. F, offspring were testcrossed to miniature, ebony, rough individuals and 1000 offspring were counted, shown in the table below. Phenotype Offspring mer 310 ++ 284 r 150 156 45 32 8 15 1000 + ++ + e EE m + E + + + r e + e + + r Total 1.Determine the genotypes of the P, and F, parents. 2.Determine the sequence of the three genes and the map distance between them. 3.Are there more or fewer double crossovers than expected? 4.Calculate the interference.

In Drosophila, a female with three recessive traits, miniature wings, (m), ebony body (e) and rough eyes (r) were crossed with true- breeding wild-type males. In the F₁, all offspring had wild-type phenotypes. F, offspring were testcrossed to miniature, ebony, rough individuals and 1000 offspring were counted, shown in the table below. Phenotype Offspring mer 310 ++ 284 r 150 156 45 32 8 15 1000 + ++ + e EE m + E + + + r e + e + + r Total 1.Determine the genotypes of the P, and F, parents. 2.Determine the sequence of the three genes and the map distance between them. 3.Are there more or fewer double crossovers than expected? 4.Calculate the interference.

Name: In Drosophila, a female with three recessive traits, miniature wings,
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Description: In Drosophila, a female with three recessive traits, miniature wings,(m), ebony body (e) and rough eyes (r) were crossed with true-breeding wild-type males. In the F₁, all offspring had wild-typephenotypes. F, offspring were testcrossedto miniature,

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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In Drosophila, a female with three recessive traits, miniature wings, (m), ebony body (e) and rough eyes (r) were crossed with true- breeding wild-type males. In the F₁, all offspring had wild-type phenotypes. F₁ offspring were testcrossed to miniature, ebony, rough individuals and 1000 offspring were counted, shown in the table below. Phenotype Offspring m e r 310 + + + 284 + er 150 m + + 156 + r 45 e + 32 m e + 8 15 + + r Total 1000 EE+E m 1.Determine the genotypes of the P₁ and F₁ parents. 1 2.Determine the sequence of the three genes and the map distance between them. 3.Are there more or fewer double crossovers than expected? 4.Calculate the interference.
You are given a Drosophila female that looks wild-type but is heterozygous for mutations intan body (t), miniature wings (m), and white eyes (w). You test cross this female with a tanbodied, miniature winged, and white-eyed homozygous mutant male, and you obtain thefollowing 1400 progeny: Phenotype : number+ + + : 608t m w : 516+ m w : 2t + + : 6+ m + : 39t + w : 46+ + w : 81t m + : 102 Calculate the distance between each pair t-m, m-w, and t-w only using the number ofrecombinants between them (i.e. ignoring the gene in the middle). Draw a linear map with thedistances between genes.
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In Drosophila, a female with three recessive traits, miniature wings, (m), ebony body (e) and rough eyes (r) were crossed with true-breeding wild-type males. In the F1, all offspring had wild-type phenotypes. F1 offspring were testcrossed to miniature, ebony, rough individuals and 1000 offspring were counted, shown in the table below. Determine the genotypes of the P1 and F1 parents. Determine the sequence of the three genes and the map distance between them. Are there more or fewer double crossovers than expected? Calculate the interference. Phenotype Offspring m e r 310 + + + 284 + e r 150 m + + 156 m + r 45 + e + 32 m e + 8 + + r 15 Total 1000
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