Red-green color blindness is inherited as a recessive X-linked trait. Individuals who are missing one sex chromosome due to meiotic nondisjunction are XO and have Turner syndrome. Two phenotypically normal parents have a child with Turner syndrome that is color blind. Did the nondisjunction happen in the mother or father? Explain your reasoning.

Q: O 100% O 75% O 50% O 0%

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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.