A pedigree diagram of a disorder caused by a mitochondrial DNA mutation will show:Group of answer choicesmales and females affected equally, affected children have at least one affected parent, and that heterozygotes are affected.more males than females are affected, affected sons can have parents with normal phenotypes, affected female offspring have an affected father, and the mother must be affected or be a carrier.all of the offspring of an affected female are affected.males and females affected equally, affected children can have unaffected parents, and that heterozygotes have a normal phenotype.males and females affected equally, heterozygotes have a normal phenotype, and affected children can have unaffected parents.
Question
A pedigree diagram of a disorder caused by a mitochondrial DNA mutation will show:Group of answer choicesmales and females affected equally, affected children have at least one affected parent, and that heterozygotes are affected.more males than females are affected, affected sons can have parents with normal phenotypes, affected female offspring have an affected father, and the mother must be affected or be a carrier.all of the offspring of an affected female are affected.males and females affected equally, affected children can have unaffected parents, and that heterozygotes have a normal phenotype.males and females affected equally, heterozygotes have a normal phenotype, and affected children can have unaffected parents.
Solution
A pedigree diagram of a disorder caused by a mitochondrial DNA mutation will show: all of the offspring of an affected female are affected.
This is because mitochondrial DNA is inherited solely from the mother. Therefore, if a female has a mitochondrial DNA mutation, all of her offspring will inherit that mutation. Conversely, if a male has a mitochondrial DNA mutation, none of his offspring will inherit the mutation because they do not receive his mitochondrial DNA.
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