Use the Following Information to Answer the Question Below

question 32

Multiple Choice

Use the following information to answer the question below.
Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not. They identify the gene responsible for toxin production. The dominant allele (T) codes for an enzyme that makes the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin. Heterozygotes produce an intermediate amount of toxin. The genotypes of all individuals in the population are determined (see chart) and used to determine the actual allele frequencies in the population.
Refer to the accompanying figure. Is this population in Hardy-Weinberg equilibrium?

• A) Yes.
• B) No; there are more heterozygotes than expected.
• C) No; there are more homozygotes than expected.
• D) It is impossible to tell.

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Definitions:

External Stimuli

Surrounding factors or influences that impact an individual from the outside environment.

Circadian Rhythms

Physical, mental, and behavioral changes that follow a 24-hour cycle, responding primarily to light and darkness in an organism's environment.

Biological Cycles

Natural, rhythmic processes in living organisms that can affect physical and mental states, such as circadian rhythms.

Electroencephalograph

A medical instrument used to measure the electrical activity of the brain, often used in diagnosing neurological conditions.