A female fly that is wild-type in appearance, but known to be heterozygous for a

Question

A female fly that is wild-type in appearance, but known to be heterozygous for a gene controlling wing size is mated with a male that has very short wings. They produce 22 offspring: 6 females with long wings, 5 females with short wings, 6 males with long wings and 5 males with short wings.

Based on this information, which of the following are possible modes of inheritance for the short-winged mutation? (there can be more than one right answer)

      
X-linked recessive

      
X-linked dominant

      
autosomal dominant

      
autosomal recessiv

Explanation / Answer

Ans:autosomal recessive

characteristic features:

1)equal number of males and females will be affeted.
2)two copies needed for expression

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