boy with Klinefelter syndrome (47,XXY) is born to a mother who  is  phenotypically  normal  and  a  father who  has  the  X- linked  skin  condition  called  anhidrotic  ectodermal  dysplasia.  The boy has patches of normal skin and patches of abnormal skin. Which of the following statemnets likely explains these observations?   The father contributed the extra X chromosome in the son as a result of a non-disjunction in meiosis I during spermatogenesis. The mother contributed the extra X chromosome in the son as a result of a non-disjunction in meiosis II during oogenesis. The mother contributed the extra X chromosome in the son as a result of a non-disjunction in meiosis I during oogenesis. The father contributed the extra X chromosome in the son as a result of a non-disjunction in meiosis II during spermatogenesis. Either parent could have contributed to the extra X chromosome in the son as a results of disjunction in either meiosis I or meiosis II during gametogenesis.

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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.