Parent Cross: Blue-Eyed Male x Normal Female Blue-Eyed Female F1 Offspring Normal Male Normal Female Blue-Eyed Male 48 Table 1. Parent cross between a blue-eyed male and normal female; data indicate the phenotypes of the flies that are mated as well as the number of offspring 44 F1 Cross: Blue-Eyed F1 Male x Blue-Eyed F1 Female Blue-Eyed Male Blue-Eyed Female Normal Male Normal Female F2 Offspring 11 Table 2. Cross between a blue-eyed male F1 offspring and a blue-eyed female F1 offspring; data indicate the phenotypes of the flies that are mated as well as the number of offspring 12 34 37

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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Drosophila melanogaster, the common fruit fly, is a model organism due to the similar relationship 
between fruit fly and human genes and similar sex chromosome behavior, among other 
characteristics. Researchers studying fruit fly characteristics have discovered a new trait: blue 
eyes. To investigate the inheritance of the blue-eyed trait, researchers have performed multiple 
crosses (Tables 1 and 2). 

 

Parent Cross: Blue-Eyed Male x Normal Female
Blue-Eyed
Female
48
Table 1. Parent cross between a blue-eyed male and normal female; data indicate the
phenotypes of the flies that are mated as well as the number of offspring
F1 Offspring
Normal Male
Normal Female
Blue-Eyed Male
44
F1 Cross: Blue-Eyed F1 Male x Blue-Eyed F1 Female
Blue-Eyed
Female
37
Normal Male
Normal Female
Blue-Eyed Male
F2 Offspring
12
11
34
Table 2. Cross between a blue-eyed male F1 offspring and a blue-eyed female F1 offspring; data
indicate the phenotypes of the flies that are mated as well as the number of offspring
Transcribed Image Text:Parent Cross: Blue-Eyed Male x Normal Female Blue-Eyed Female 48 Table 1. Parent cross between a blue-eyed male and normal female; data indicate the phenotypes of the flies that are mated as well as the number of offspring F1 Offspring Normal Male Normal Female Blue-Eyed Male 44 F1 Cross: Blue-Eyed F1 Male x Blue-Eyed F1 Female Blue-Eyed Female 37 Normal Male Normal Female Blue-Eyed Male F2 Offspring 12 11 34 Table 2. Cross between a blue-eyed male F1 offspring and a blue-eyed female F1 offspring; data indicate the phenotypes of the flies that are mated as well as the number of offspring
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