P generation White-eyed female Red-eyed male X"X"Y х*Y Separation of Xs (90% of time) Nondisjunction of Xs (10% of time) Gametes x"Y Fertilization F, generation Sperm x*X"Y XYY x*Y Red-eyed female White-eyed male Progeny resulting from separation of Xs Red-eyed female White-eyed male X"X"Y X*X"xw Red-eyed metafemale (dies) female x*Y White-eyed Progeny resulting from nondisjunction YY Red-eyed male Dies F, flies Red-eyed females V2 XX, V2 XXY White-eyed males XY, V½ XY Results Chromosomes observed White-eyed females XY Red-eyed males XY

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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.