What does the given pedigree chart indicate?

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(A) In the given pedigree,both parents are affected (shaded),yet they have unaffected offspring (unshaded). This indicates that the trait is dominant,

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Dominant inheritance

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(A) In the given pedigree,both parents are affected (shaded),yet they have unaffected offspring (unshaded). This indicates that the trait is dominant,as two affected parents can produce an unaffected child only if the trait is dominant and both parents are heterozygous $(Aa 	imes Aa ightarrow aa)$. If the trait were recessive,two affected parents would only produce affected offspring. Therefore,the pedigree represents dominant inheritance.

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