A Large Population of Laboratory Animals Has Been Allowed to Breed

question 46

Multiple Choice

A large population of laboratory animals has been allowed to breed randomly for a number of generations. After several generations, 25% of the animals display a recessive trait (A2A2) , the same percentage as at the beginning of the breeding program. The rest of the animals show the dominant phenotype, with heterozygotes indistinguishable from the homozygous dominants.
What is the estimated frequency of allele A1 in the gene pool?

• A) 0.125
• B) 0.25
• C) 0.50
• D) 0.75

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Definitions:

Cardiac Output

The volume of blood the heart pumps per minute, a critical measure of heart function and cardiovascular health.

Vasodilation

The widening of blood vessels, which decreases blood pressure and increases the flow of blood.

Femoral Artery

A major artery located in the thigh that supplies blood to the lower limb.

Supplies Blood

Refers to the circulatory system's role in delivering oxygen and nutrients to tissues and removing waste products through blood circulation.