Use the Figure and the Following Description to Answer the Question

question 18

Multiple Choice

Use the figure and the following description to answer the question.
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 F1 cross is diagrammed in the Punnett square shown in the figure, where 1, 2, 3, and 4 represent the genotypes corresponding to each box within the square.
Which of the boxes marked 1-4 correspond to plants with dark leaves?

• A) 1 only
• B) 4 only
• C) 1, 2, and 3
• D) 2, 3 and 4

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Definitions:

Committed Relationship

A long-term, romantic relationship where partners are dedicated to each other and share mutual goals and intimacy.

Desirable

Having qualities that are pleasing or sought after by others; often refers to attributes that make something or someone attractive or enviable.

Parental Double Standard

The differing expectations or rules parents set for their children, often based on gender.

Communal Relationship

A type of relationship where partners emphasize mutual responsiveness to each other's needs.