Below is a pedigree chart for a family that has a history of Alkaptonuria.   Individuals infected with this condition can have darkened skin, brown urine, and can suffer from joint damage and other complications.  Given this pedigree answer the following questions.   Given the data in the pedigree chart is this genetic condition autosomal dominant or autosomal recessive? What are the genotypes for #1, #2, and #3?  If either of the 4th generation "aa" females were to mate with a homozygous dominant male would any of their offspring illustrate the phenotype?  Why or why not?

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Below is a pedigree chart for a family that has a history of Alkaptonuria.   Individuals infected with this condition can have darkened skin, brown urine, and can suffer from joint damage and other complications.  Given this pedigree answer the following questions.

 

    1. Given the data in the pedigree chart is this genetic condition autosomal dominant or autosomal recessive?
    2. What are the genotypes for #1, #2, and #3? 
    3. If either of the 4th generation "aa" females were to mate with a homozygous dominant male would any of their offspring illustrate the phenotype?  Why or why not?
3
a a
Pedigree Analysis for Alkaptonuria
a a
1
A?
a a
Male O Female
2
Aa
Aa
a a
Aa
A?
Unaffected
First
generation
Second
generation
Third
generation
Fourth
generation
Affected
Transcribed Image Text:3 a a Pedigree Analysis for Alkaptonuria a a 1 A? a a Male O Female 2 Aa Aa a a Aa A? Unaffected First generation Second generation Third generation Fourth generation Affected
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