17-19. A man and women of normal phenotype have a son with Duchenne muscular dystrophy, a sex-linked recessive disorder. They are planning to have another child and you ask for genetic counseling for the following: A. What is the likelihood that another child will have this disease if it is a boy?___ B. What is the likelihood that another child will have the disease if it is a girl? C. What is the overall chance of any child in their family getting the disease? OA=1/4 or 25% , B = 0% , C = 3/4 or 75% A = 1/2 or 50% , B = 1/2 or 50%, C = 1/4 or 25% A = 1/2 or 50% , B = 0%, C = 1/4 or 25% A = 0%, B = 0%, C = 1/4 or 25%

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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.