A Researcher Has Developed Two Stains for Use with Seed

question 63

Multiple Choice

A researcher has developed two stains for use with seed plants. One stains sporophyte tissue blue; the other stains gametophyte tissue red. If the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur?

• A) The pollen grains will be pure red.
• B) The pollen grains will be pure blue.
• C) The pollen grains will have red interiors and blue exteriors.
• D) The pollen grains will have blue interiors and red exteriors.

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Definitions:

Anxiety Gene

A colloquial term potentially referring to any genetic variation that is linked to an increased risk of anxiety disorders.

Neurotransmitter

Chemical substances that transmit signals across a synapse from one neuron to another.

Serotonin

A neurotransmitter that plays a critical role in regulating mood, appetite, sleep, and cognitive functions.

Dopamine

A neurotransmitter associated with the brain's reward system, movement, and motivation, playing a crucial role in feelings of pleasure and satisfaction.