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Byju's Answer
Standard XII
Biology
Down Syndrome
In the above ...
Question
In the above given pedigree, assume that no outsider marrying in, carry a disease. Write the genotypes of II and III.
A
All
X
d
Y
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B
X
D
Y
a
n
d
X
D
X
d
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C
X
d
X
X
d
Y
a
n
d
X
d
Y
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D
X
d
X
d
a
n
d
X
d
Y
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Solution
The correct option is
C
X
d
X
X
d
Y
a
n
d
X
d
Y
The given pedigree shows: X — linked recessive disease.
Here, the genotypes are as follows:
V
—
X
d
X
d
I
—
X
d
Y
I
V
—
X
D
X
d
/
X
D
X
D
I
I
—
X
d
Y
I
I
I
—
X
D
X
d
/
X
D
X
D
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