How Many Different Kinds of Nucleotides Are in DNA

question 58

Multiple Choice

How many different kinds of nucleotides are in DNA?

• A) Four
• B) Millions
• C) Hundreds or thousands
• D) Two

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Definitions:

Negative Reinforcer

A stimulus whose removal after a behavior increases the likelihood of that behavior occurring again in the future.

Shaping

A technique in behavioral psychology involving the successive reinforcement of behaviors that approximate the desired behavior.

Negative Reinforcement

A process in learning whereby the likelihood of a behavior is increased by removing or avoiding a negative outcome or stimuli.

Secondary Learning

Learning that builds on previously acquired knowledge, skills, or understanding, often involving the application of basic concepts to new situations.