If a male has genotype Aa Bb Cc Dd, what proportion of his sperm cells are expected to have genotype A B C D? Type your answer as a fraction, with no spaces.

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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.