Genetics Based Questions Introduction : In fruit flies, red eye is the wild-phen
ID: 278488 • Letter: G
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Genetics Based Questions
Introduction: In fruit flies, red eye is the wild-phenotype, meaning it is the phenotype seen most frequently in nature. The white eye trait is due to a mutation that can be passed down form parents to offspring. Your overall goal in this lab will be to determine the inheritance pattern of this white eye trait.
The fruit flies in the table below are the F1 offspring of a cross between the following parents (P Generation): White Eyed Female X Red Eyed Male
1. Answer the pattern related questions
A. The red eye & white eye genes are Autosomal/Sex-Linked (Choose one)
B. Genotypes of the parents (P generation)
Group Red Eyed male Red Eyed Female White Eyed Male White Eyed Female Total 0 22 35 1Explanation / Answer
1) A) In the cross between white eyed female and red eyed male, there are no offsprings who are red eyed male. Therefore, the trait is sex linked and most probably, it is X linked dominant.
B) The genotypes of the parents are represented below,
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