Given below is a pedigree chart showing the i | vedclass

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(B) In the given pedigree chart,both parents are unaffected (unshaded),but they have affected (shaded) offspring. This indicates that the trait is rec

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Autosomal recessive trait

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(B) In the given pedigree chart,both parents are unaffected (unshaded),but they have affected (shaded) offspring. This indicates that the trait is recessive. If the trait were sex-linked recessive,an affected daughter must have an affected father,which is not the case here (the father is unaffected). Therefore,the trait must be autosomal recessive,where both parents are heterozygous carriers $(Aa)$. This allows for the possibility of having affected $(aa)$ children,as seen in the chart.

Given below is a pedigree chart showing the inheritance of a certain trait in humans. Select the correct option for the given chart.

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