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the purple grobshack, horh color is determined by three alleles on the single gene hrn2: COIC

the purple grobshack, horh color is determined by three alleles on the single gene hrn2: COIC

Human Anatomy & Physiology (11th Edition)
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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In the purple grobsnack, horn color is determined by three alleles on the single gene hrn2: B = Black W = White R = Red The "R" allele is completely dominant over the "B" and "W" alleles. The "B" allele is incompletely dominant to "W". Also, you know that the red horns phenotype is NOT fully penetrant. Both other alleles are 100% penetrant. You conduct a cross between RB and WB individuals and find the following phenotypes in the offspring: red = 500 black = 750 %3D grey = 500 white = 250 a. What would be the expected phenotypic ratio if red was 100% penetrant? b. What is the measured penetrance % of the red horn trait? Show your work.
Transcribed Image Text:In the purple grobsnack, horn color is determined by three alleles on the single gene hrn2: B = Black W = White R = Red The "R" allele is completely dominant over the "B" and "W" alleles. The "B" allele is incompletely dominant to "W". Also, you know that the red horns phenotype is NOT fully penetrant. Both other alleles are 100% penetrant. You conduct a cross between RB and WB individuals and find the following phenotypes in the offspring: red = 500 black = 750 %3D grey = 500 white = 250 a. What would be the expected phenotypic ratio if red was 100% penetrant? b. What is the measured penetrance % of the red horn trait? Show your work.
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