If two genes on the same chromosome, A and B, are completely linked and no crossovers can occur between them, how many phenotypic combinations would be visible in the offspring from a testcross between a heterozygous female (AaBb) and a homozygous recessive male (aabb)? Explain. A. 1 B. 2 C. 4 D. 8

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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.