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).Describe the most likely cause for the appearance of the blue-eyed trait. Parent Cross: Blue-Eyed Male x Normal FemaleBlue-EyedFemale48Table 1. Parent cross between a blue-eyed male and normal female; data indicate thephenotypes of the flies that are mated as well as the number of offspringF1 OffspringNormal MaleNormal FemaleBlue-Eyed Male44F1 Cross: Blue-Eyed F1 Male x Blue-Eyed F1 FemaleBlue-EyedFemale37Normal MaleNormal FemaleBlue-Eyed MaleF2 Offspring121134Table 2. Cross between a blue-eyed male F1 offspring and a blue-eyed female F1 offspring; dataindicate the phenotypes of the flies that are mated as well as the number of offspring

Given that, Researchers have discovered a new trait of fruit fly: blue eyes. A cross has made…

Answered: Drosophila melanogaster, the common…

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter11: The Basic Principles Of Heredity

Section: Chapter Questions

Problem 2TYU: The F1 flies described in question 1 were mated with brown-eyed flies from a true-breeding line....

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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).

Describe the most likely cause for the appearance of the blue-eyed trait.

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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