The teacher suggested that the students revise their model to represent individuals who have a heterozygous genotype and are therefore carriers for the disease. Select the FOUR individuals in the pedigree that the students know for certain are heterozygous. Generation I 1 2 Generation II 3 4 5 6 7 Generation III 8 9 10 11 Unaffected male Unaffected female Affected male Affected female

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Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.