Imagine Drosophila genes C, D, and E are autosomal genes located close to each other on the same chromosome (same assumptions as the first problem).  You cross a C D E homozygote with a c d e homozygote, then cross the F1 females with a c d e homozygous male.  Of 400 progeny, you observe the following phenotypes: 135 CDE 139 cde 22 cDE 18 Cde 42 CdE 38 cDe 3 cdE 3 CDe a.  What is the order of the genes? Calculate the distance between genes and draw a map to get the final answer.  Question 2 options:   1.CED   2. DEC   3. ECD   4. DCE

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Imagine Drosophila genes C, D, and E are autosomal genes located close to each other on the same chromosome (same assumptions as the first problem).  You cross a C D E homozygote with a c d e homozygote, then cross the F1 females with a c d e homozygous male.  Of 400 progeny, you observe the following phenotypes:

135 CDE

139 cde

22 cDE

18 Cde

42 CdE

38 cDe

3 cdE

3 CDe

a.  What is the order of the genes? Calculate the distance between genes and draw a map to get the final answer. 

Question 2 options:

 

1.CED

 

2. DEC

 

3. ECD

 

4. DCE

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