In fruit flies, eye shape is an X-linked trait. Round eyes (XG) are dominant to almond-shaped eyes (Xg). In the P generation, an almond-eyed male mates with a female that is homozygous for round eyes. What is the expected phenotype ratio (in percent) of the F2 generation from this cross? Round-eyed female:               100 75   0   50   25        Round-eyed male:                 25 0 75 100 50           Almond-eyed female:                 0 75   25   50   100        Almond-eyed male:                 0 100 75 50 25

Human Biology (MindTap Course List)
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ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
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Chapter20: Chromosomes And Human Genetics
Section: Chapter Questions
Problem 2CT: Human sex chromosomes are XX for females and XY for males. a. With respect to an X-linked gene, how...
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In fruit flies, eye shape is an X-linked trait. Round eyes (XG) are dominant to almond-shaped eyes (Xg).

In the P generation, an almond-eyed male mates with a female that is homozygous for round eyes.

What is the expected phenotype ratio (in percent) of the F2 generation from this cross?

Round-eyed female:              

100

75

 

0

 

50

 

25

      

Round-eyed male:              

 

25

0

75

100

50

         

Almond-eyed female:              

 

0

75

 

25

 

50

 

100       

Almond-eyed male:              

 

0

100

75

50

25  

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