Hairlessness in Dogs Is Inherited from a Single Dominant Allele

question 22

Multiple Choice

Hairlessness in dogs is inherited from a single dominant allele.Inheriting two dominant alleles is lethal for an embryo.Ralph and Penelope are both hairless dogs.What is the probability that Penelope will give birth to a puppy with hair?

• A)3/4
• B)1/3
• C)2/3
• D)1/4

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Definitions:

Mineral

A naturally occurring, inorganic substance with a definite chemical composition and crystalline structure.

Neural Tube Defects

Birth defects of the brain, spine, or spinal cord that occur in the first month of pregnancy due to improper closure of the neural tube.

Folic Acid

A B vitamin essential for cell growth and metabolism, particularly important during pregnancy to prevent neural tube defects.

Pregnancy

The state of carrying a developing embryo or fetus within the female body, typically lasting about 40 weeks from the last menstrual period to childbirth.