magine that you finally solved the mystery of the color pattern of zebras. One gene defines the color of the fur, with two alleles for two colors: black (B) and white (b). Both alleles are co-dominant. Another gene regulates the expression of the color through epistasis. You name the two alleles for this regulator gene G and g. The dominant allele G is necessary for the fur color (white is considered a color) to be produced. The recessive g allele does not allow fur color expression. Zebra with no fur color expression appear green. You breed two double heterozygous zebras. A)What do these double heterozygotes look like?______________________ B) Fill the Punnett square and provide the predicted proportion of zebras of different colors from that cross.... The colors obtained are the following (include expected ratio or percentage): C)Naturally, there are no green zebras. Propose a genetic explanation for this lack of green zebras? Answer:

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Q: Define ‘gene’. What is an allele and loss-of-function alleles? What do these alleles tell us about…

A: "a DNA phase that contributes to the phenotype/characteristic of an organism."

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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.