Use Figure 14

question 45

Multiple Choice

Use Figure 14.1 and the following description to answer the questions below.
In a particular plant, leaf color is controlled by gene locus D. Plants with at least one allele D have dark green leaves, and plants with the homozygous recessive dd genotype have light green leaves. A True-breeding dark-leaved plant is crossed with a light-leaved one, and the F1 offspring is allowed to self-pollinate. The predicted outcome of the F2 is diagrammed in the Punnett square shown in Figure 14.1, where 1, 2, 3, and 4 represent the genotypes corresponding to each box within the square.

-Which of the plants will be True-breeding?

• A)1 and 4
• B)2 and 3
• C)1-4
• D)1 only
• E)None

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Definitions:

Psychological Disorders

Mental disorders characterized by patterns of behavior or thought that are significantly distressing or impairing to an individual’s ability to function.

Neurotransmitters

Chemical messengers that transmit signals across synapses from one neuron to another in the nervous system.

Neuron

A specialized cell of the nervous system that receives and transmits messages.

Message

A piece of information or communication conveyed from one person or group to another.