Q. 3: In rats, the following genotypes of two independently assorting autosomal genes determine cont color: A-B- (gray) A-bb (yellow) aab (black) aabb (cream) A third gene pair on a separate autosome determines whether or not any color will be produced. The CC and Ce genotypes allow color according to the expression of the A and B alleles. However, the ce genotype results in albino rats regardless of the A and B alleles present. Determine the Fl phenotypic ratio of the following crosses: (a) AAbbCC x aaBBcc (b) AaBBCC x AABbce (c) AaBbCc x AaBbcc

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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.