The Human Genome Has Been Shown to Code for 51

question 14

Multiple Choice

The human genome has been shown to code for 51 different functional VH segments,25 different DH segments and 6 JH segments for the heavy chain variable regions of antibodies.Assuming that any V segment can combine with any of the D and J segments,how many different heavy chains could be made?

• A)7650
• B)765
• C)82
• D)820
• E)76,820

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Definitions:

FR-5 Schedule

A fixed-ratio schedule of reinforcement where a response is rewarded only after five instances of the behavior.

FR-15 Schedule

A fixed-ratio schedule of reinforcement where a response is reinforced only after it has been produced 15 times.

Fixed-Ratio

A reinforcement schedule where a response is reinforced only after a specified number of responses.

Variable-Ratio

A reinforcement schedule where a response is reinforced after an unpredictable number of responses, leading to high and steady response rates.