In Drosophila, a gene controls body color producing either normal body color or the mutant form black body color (bl. A second gene controls wings. The flies either have normal wings or are wingless (wn). A cross is made between a homozygous wild type fly and fly with black body and wingless. A test cross was then performed. The following progeny was observed: Phenotype # Observed Wild Type 405 Normal, wingless 85 Black, normal 100 Black, wingless 410 A. List the genotypes of the original parents B. List the genotypes of the testcross. C. Are these two genes linked? How do you know?
In Drosophila, a gene controls body color producing either normal body color or the mutant form black body color (bl. A second gene controls wings. The flies either have normal wings or are wingless (wn). A cross is made between a homozygous wild type fly and fly with black body and wingless. A test cross was then performed. The following progeny was observed: Phenotype # Observed Wild Type 405 Normal, wingless 85 Black, normal 100 Black, wingless 410 A. List the genotypes of the original parents B. List the genotypes of the testcross. C. Are these two genes linked? How do you know?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:In Drosophila, a gene controls body color producing either normal body color or the mutant form black body color (bl. A second
gene controls wings. The flies either have normal wings or are wingless (wn). A cross is made between a homozygous wild type
fly and fly with black body and wingless. A test cross was then performed. The following progeny was observed:
Phenotype
# Observed
Wild Type
405
Normal, wingless 85
Black, normal 100
Black, wingless 410
A. List the genotypes of the original parents.
B. List the genotypes of the testcross.
C. Are these two genes linked? How do you know?
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