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6. The famous geneticist, T.H. Morgan, carried out a series of experiments on linkage mapping in Drosophila. He constructed a series of three-point testcrosses for his mapping studies. What is a three-point testcross (Diagram the genotypes of the parents involved in such a cross)? How many F1 progeny classes are possible from such a cross (show your calculation for your answer)? 1_11_2021 In one such cross, Morgan examined the linkage of three genes v (vermillion eye), cv (crossveinless wings), and ct (cut wing margin). These three are the mutant phenotypes, the wildtype being red eye, crossvein and normal wing margin. From a three-point testcross he obtained the following progeny: + + + AA + > > V + V CV CV +Q CV ct U+ ++++ + ct ct - 580 - 45 - 5 94 CV ct What is the genetic map of these three loci? - 592 40 3 89 3

6. The famous geneticist, T.H. Morgan, carried out a series of experiments on linkage mapping in Drosophila. He constructed a series of three-point testcrosses for his mapping studies. What is a three-point testcross (Diagram the genotypes of the parents involved in such a cross)? How many F1 progeny classes are possible from such a cross (show your calculation for your answer)? 1_11_2021 In one such cross, Morgan examined the linkage of three genes v (vermillion eye), cv (crossveinless wings), and ct (cut wing margin). These three are the mutant phenotypes, the wildtype being red eye, crossvein and normal wing margin. From a three-point testcross he obtained the following progeny: + + + AA + > > V + V CV CV +Q CV ct U+ ++++ + ct ct - 580 - 45 - 5 94 CV ct What is the genetic map of these three loci? - 592 40 3 89 3

Human Anatomy & Physiology (11th Edition)
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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6. The famous geneticist, T.H. Morgan, carried out a series of experiments on linkage mapping in Drosophila. He constructed a series of three-point testcrosses for his mapping studies. What is a three-point testcross (Diagram the genotypes of the parents involved in such a cross)? How many F1 progeny classes are possible from such a cross (show your calculation for your answer)? 1 11 2021 In one such cross, Morgan examined the linkage of three genes v (vermillion eye), cv (crossveinless wings), and ct (cut wing margin). These three are the mutant phenotypes, the wildtype being red eye, crossvein and normal wing margin. From a three-point testcross he obtained the following progeny: >> ++++> V V + V 88 + 8 CV CV CV ++ ++++ ct ct ct - 580 45 5 94 592 40 3 89 1 - CV ct What is the genetic map of these three loci? 3
Transcribed Image Text:6. The famous geneticist, T.H. Morgan, carried out a series of experiments on linkage mapping in Drosophila. He constructed a series of three-point testcrosses for his mapping studies. What is a three-point testcross (Diagram the genotypes of the parents involved in such a cross)? How many F1 progeny classes are possible from such a cross (show your calculation for your answer)? 1 11 2021 In one such cross, Morgan examined the linkage of three genes v (vermillion eye), cv (crossveinless wings), and ct (cut wing margin). These three are the mutant phenotypes, the wildtype being red eye, crossvein and normal wing margin. From a three-point testcross he obtained the following progeny: >> ++++> V V + V 88 + 8 CV CV CV ++ ++++ ct ct ct - 580 45 5 94 592 40 3 89 1 - CV ct What is the genetic map of these three loci? 3
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