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In the following human pedigree, the filled symbols represent the affected individuals. Identify the type of given pedigree.

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a
Autosomal recessive
b
X-linked dominant
c
Autosomal dominant
d
X-linked recessive

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detailed solution

Correct option is A

It is a autosomal recessive trait. No crisscross inheritance is observed. Both males and females seem to possess the trait and so it is autosomal. Fourth member of generation III is affected although either of the parents are not hence it is recessive.

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