Refer to the Table

question 41

Multiple Choice

Refer to the table.

- Suppose that, following the experiments by Dodd, Drosophila pseudoobscura are fed one of two diets (starch or maltose) for many generations. Once they have adapted to the new food sources, individual females from the starch treatment are given a choice between a male adapted to starch (a starch male) , or a male adapted to maltose (a maltose male) . When 50 females have chosen a mate, the experiment is repeated with females adapted to maltose. The results are in the table. Which conclusion is best supported by the data?

• A) No reproductive barriers evolved.
• B) Partial reproductive barriers evolved in one direction of the cross, with starch-adapted females choosing starch-adapted males over maltose-adapted males.
• C) Partial reproductive barriers evolved in both direction of the cross.
• D) Complete reproductive barriers evolved in both directions of the cross.

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Definitions:

Population Locations

The geographical areas or places where members of a specific population reside.

Sample Sizes

The number of observations or units chosen from a population for the purpose of statistical analysis.

Sign Test

A non-parametric test used to determine if there are differences between two dependent samples or repeated measurements on a single sample.

Nonzero Differences

This term refers to the count or instances where differences or changes between data points or values are not equal to zero.