Guppies from Trinidad Form Two Distinct Populations That Differ in Several

question 14

Multiple Choice

Guppies from Trinidad form two distinct populations that differ in several life history traits. These traits appear to relate to the local predator populations, pike-cichlids or killifish. Which experiments would best test the heritability of these traits?

• A) Raise both populations with cichlids to see if the population of smaller, faster-maturing guppies reproduces more quickly.
• B) Raise both populations without predators to see if they maintain their life history traits.
• C) Introduce cichlids into a habitat with killifish.
• D) Provide additional food to the guppies from cichlid habitats to see if they will grow to the same size as guppies from the killifish habitat.

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Definitions:

Positive Trend Line

A graphical representation indicating an increase or upward movement in data points over time.

Slope

In a linear equation, the coefficient that represents the rate of change of the dependent variable with respect to the independent variable.

Y′ Symbol

A notation generally used to represent predicted values, especially in the context of regression analysis.

Y Intercept

The y-intercept is the point where a line or curve intersects the y-axis of a graph.