Flower Color in Snapdragons Is Due to a Gene with Incomplete

question 158

Multiple Choice

Flower color in snapdragons is due to a gene with incomplete dominance: C^RC^R plants have red flowers, C^RC^W have pink flowers, and C^WC^W plants have white flowers. Which cross is expected to yield progeny with flower colors in a ratio of 1 red:1 pink?

• A)C^RC^R × C^RC^W
• B)C^RC^R × C^WC^W
• C)C^RC^W × C^RC^W
• D)C^RC^W ×C^WC^W
• E)C^WC^W × C^WC^W

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Definitions:

Presynaptic Terminal

The end point of a neuron where it connects to another neuron or muscle cell, releasing neurotransmitters to transmit nerve impulses.

Acetylcholine

A neurotransmitter involved in muscle activation and various functions in the central and peripheral nervous system, including memory and arousal.

ATP Molecule

Adenosine triphosphate, the primary carrier of energy in cells, facilitating energy transfer by undergoing enzymatic hydrolysis.

Cross-Bridge

The link formed between the actin and myosin filaments in a muscle fiber that generates contraction by shortening the muscle.