
Biology
Molecular Basis of Inheritance Solutions
Labrador retrievers come in three different colors, such as black, brown (chocolate), and yellow (golden),
due to interplay between two genes (epistasis). One of them controls the color of the coat, where black
coat (B) is dominant to brown (b). The other gene, however, regulates whether or not color will be
produced and has dominant (E = black or brown is produced) and recessive (e = yellow is produced)
alleles. Which of the following statements is CORRECT about the genetics of coat color in Labradors?
OBbEe will be brown
O BBee will be yellow
O bbЕe will be black
O bbee will be brown