1. This pedigree tracks the inheritance of freckles, an autosomal dominant trait, for 3 generations. II II A. Determine the genotypes of all individual in the chart. Il-1 Il-2 Il-3 III-1 1-1 1-2 III-2 III-3 III-4 III-5 Il-4 Il-5 III-6 B. If III-6 marries someone without freckles, is it possible for them to have a non-freckled child? Why or why not?

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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.