Fused ear lobes appear in the progeny due to an autosomal recessive gene, Work out the genotypes of members in the given pedigree

Options

A. `{:(" I-2 II-3 II-1"),(" aa Aa Aa"):}`
B. `{:(" I-2 II-3 II-1"),(" aa AA AA"):}`
C. `{:(" I-2 II-3 II-1"),(" Aa Aa Aa"):}`
D. `{:(" I-2 II-3 II-1"),(" aa Aa AA"):}`

Answer

A

Explanation

Given pedigree chart for fused ear lobes (autosomal recessive trait) can be explained as follows :