If Many Human Genes Differ in About 10% of Their

question 21

Multiple Choice

If many human genes differ in about 10% of their bases from another species' same genes and substitutions occur at an estimated rate of 2% per one million years,approximately how many years have passed since the two species diverged?

• A) 5 million
• B) 3 million
• C) 10 million
• D) 20 million
• E) 200 million

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Definitions:

Token Economy

A behavior modification system based on the systematic reinforcement of target behavior through the distribution and exchange of tokens that can be exchanged for desired incentives.

External Variable

A factor outside the control of individuals that can affect their actions, outcomes, or a study's results, often considered in research to ensure validity.

Self-control

The ability to regulate one's emotions, thoughts, and behavior in the face of temptations and impulses.

Negative Reinforcement

A behavioral principle where the removal of an unpleasant stimulus following a behavior increases the likelihood of that behavior being repeated in the future.