A pedigree diagram showing an inheritance pattern in which males and females affected equally and heterozygotes have a normal phenotype.Group of answer choicessex-linked dominantsex-linked recessivemitochondrial DNA mutationautosomal recessiveautosomal dominant
Question
A pedigree diagram showing an inheritance pattern in which males and females affected equally and heterozygotes have a normal phenotype.Group of answer choicessex-linked dominantsex-linked recessivemitochondrial DNA mutationautosomal recessiveautosomal dominant
Solution
The inheritance pattern described in the question is autosomal recessive. Here's why:
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"Males and females affected equally": This rules out sex-linked dominant and sex-linked recessive, as these would typically show different patterns in males and females due to the differences in sex chromosomes.
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"Heterozygotes have a normal phenotype": This rules out autosomal dominant, as heterozygotes would show the trait in this type of inheritance.
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"Mitochondrial DNA mutation" is ruled out because these are typically maternally inherited and would not affect males and females equally.
Therefore, the remaining option is autosomal recessive, which fits the description given. In this
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