8.7 Red-Green Color Blindness Problem: Red-Green color blindness is due to the inheritance of an X-linked recessive allele. James and Susan have normal color vision, but Susan's father was colorblind (her mother was not). A pedigree chart of their family is provided below. Where squares = males, and circles = females. Open shapes indicate the individual did not inherit the condition, shaded shapes indicate affected indivicuals. Half-shaded shapes indicate an unaffected individual with one recessive allele (a carrier). James Susan Jimmy Stanley Sidney Jamie Created by Paint X Post: Answer the following questions. What are the genotypes of James and Susan? James and Susan raise 4 children; What are the genotypes and phenotypes (normal vision, or RG colorblind) for each child. Finally, what can you deduce about the parents of the children from this information?

Human Anatomy & Physiology (11th Edition)
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ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
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8.7 Red-Green Color Blindness
Problem: Red-Green color blindness is due to the inheritance of an X-linked recessive allele. James and Susan have normal color vision, but Susan's
father was colorblind (her mother was not). A pedigree chart of their family is provided below. Where squares = males, and circles = females. Open
shapes indicate the individual did not inherit the condition, shaded shapes indicate affected individuals. Half-shaded shapes indicate an unaffected
individual with one recessive allele (a carrier).
James
Susan
Jimmy
Stanley
Sidney
Jamie
Created by Paint X
Post: Answer the following questions.
What are the genotypes of James and Susan?
James and Susan raise 4 children; What are the genotypes and phenotypes (normal vision, or RG colorblind) for each child.
Finally, what can you deduce about the parents of the children from this information?
Transcribed Image Text:8.7 Red-Green Color Blindness Problem: Red-Green color blindness is due to the inheritance of an X-linked recessive allele. James and Susan have normal color vision, but Susan's father was colorblind (her mother was not). A pedigree chart of their family is provided below. Where squares = males, and circles = females. Open shapes indicate the individual did not inherit the condition, shaded shapes indicate affected individuals. Half-shaded shapes indicate an unaffected individual with one recessive allele (a carrier). James Susan Jimmy Stanley Sidney Jamie Created by Paint X Post: Answer the following questions. What are the genotypes of James and Susan? James and Susan raise 4 children; What are the genotypes and phenotypes (normal vision, or RG colorblind) for each child. Finally, what can you deduce about the parents of the children from this information?
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