Use the Following Information to Answer the Questions Below

question 22

Multiple Choice

Use the following information to answer the questions below.
Labrador retrievers are black, brown, or yellow. In a cross of a black female with a brown male, results can be either all black puppies, 1/2 black to 1/2 brown puppies, or 3/4 black to 1/4 yellow puppies.
-In one type cross of black × black, the results were as follows:
9/16 black
4/16 yellow
3/16 brown
The genotype aabb must result in which of the following?

• A) black
• B) brown
• C) yellow
• D) a lethal result
• E) white

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Definitions:

Incubation Period

The time between exposure to an infectious agent and the onset of symptoms.

Parenteral Route

A way of administering medications bypassing the digestive system, such as through intravenous or intramuscular injection.

Cleft Lip

A birth defect characterized by a split or opening in the upper lip that can extend into the nose, which can affect speech, eating, and is often treatable with surgery.