You Decide to Study Two Species of Birds, Both of Which

question 15

Multiple Choice

You decide to study two species of birds, both of which form monogamous pairs (one male and one female) . In species 1, you find that the eggs in a pair's nest are in fact almost always the offspring of that pair. In species 2, you are surprised to find that many of the eggs in a nest were actually fathered by males of neighboring pairs. Apparently, mating outside of monogamous pairings is widespread in species 2. What would you expect to observe if you examined the reproductive tracts of the female birds in the species?

• A) Females of species 2 would have sperm from multiple males in their reproductive tracts.
• B) Females of species 1 would have sperm from multiple males in their reproductive tracts, but would only use their partners' sperm to fertilize eggs.
• C) Ovaries of species 1 are larger than those of species 2.
• D) Females of species 1 would produce more oocytes.

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Definitions:

Stimulus Control

The degree to which conditions in the environment influence the occurrence of a specific behavior.

Example

A representative instance or case used to illustrate or explain a concept, principle, or process.

Stimulus Discrimination

The ability to differentiate between similar stimuli and respond only to the specific stimulus that is associated with a reinforcement.

Stimulus Generalization

The phenomenon where a response to a specific stimulus becomes associated with similar stimuli, resulting in a similar response.