Use Figure 14

question 1

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.

Figure 14.1
-Which of the plants will be true-breeding?

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

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Definitions:

Independent Variables

Variables in statistical models that are manipulated or categorized to observe their effect on dependent variables.

Quantitative Predictor Variables

Variables that can be quantified and measured and are used to predict outcomes in statistical analyses.

Indicator Variables

Variables used in statistical models that take the value of 1 if a certain condition is met and 0 otherwise, often used to represent categorical data.

Regression Model

A statistical model used to estimate the relationship between a dependent variable and one or more independent variables.