The pedigree below shows the inheritance of red-green colorblindness, an X-linked recessive trait (XD = normal vision, Xd = colorblindness allele). For all of the questions below, assume that there is no abnormal event or new mutation; also, ignore X-inactivation for this problem. - Genotype II 1 2 3 II What are the genotypes of the following individuals for color vision. Use "?" to indicate any allele about which you are uncertain. 1-1 = 1-2 = Il-1 = Il-2= Il-3 = (a) What is the probability that III-1 will be colorblind? Explain your reasoning to show how

Human Biology (MindTap Course List)
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Chapter20: Chromosomes And Human Genetics
Section: Chapter Questions
Problem 7CT: The following pedigree shows the pattern of inheritance of red-green color blindness in a family....
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The pedigree below shows the inheritance of red-green colorblindness, an X-linked recessive
trait (XD = normal vision, Xd = colorblindness allele). For all of the questions below, assume
that there is no abnormal event or new mutation; also, ignore X-inactivation for this problem.
I
+ Genotype
II
1
2
3
?
II
What are the genotypes of the following individuals for color vision. Use "?" to indicate any
allele about which you are uncertain.
1-1 =
1-2 =
Il-1 =
Il-2=
Il-3 =
(a) What is the probability that III-1 will be colorblind? Explain your reasoning to show how
you arrived at you answer.
Transcribed Image Text:The pedigree below shows the inheritance of red-green colorblindness, an X-linked recessive trait (XD = normal vision, Xd = colorblindness allele). For all of the questions below, assume that there is no abnormal event or new mutation; also, ignore X-inactivation for this problem. I + Genotype II 1 2 3 ? II What are the genotypes of the following individuals for color vision. Use "?" to indicate any allele about which you are uncertain. 1-1 = 1-2 = Il-1 = Il-2= Il-3 = (a) What is the probability that III-1 will be colorblind? Explain your reasoning to show how you arrived at you answer.
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