In Labrador Retrievers, Black Coat Color Is Dominant to Brown

question 60

Multiple Choice

In Labrador retrievers, black coat color is dominant to brown.Suppose that a black Lab is mated with a brown one, and the offspring are 4 black puppies and 1 brown.What can you conclude about the genotype of the black parent? (Assume that B is the allele for black and b is the allele for brown.)

• A)The genotype must be BB.
• B)The genotype must be bb.
• C)The genotype must be Bb.
• D)The genotype could be either BB or Bb.
• E)The genotype cannot be determined from these data.

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Sexist Behavior

Actions or attitudes that discriminate or create inequity based on a person's gender, often favoring one gender over another.

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