Consider a Stretch of DNA with Two Short Sequence Motifs

question 92

Multiple Choice

Consider a stretch of DNA with two short sequence motifs separated by an unknown number of base pairs. Each position in the intervening DNA is equally likely to be any of the four nucleotides. Would you expect many sites to be close together and a few farther apart? Few to be close together and many farther apart? Equal spacing? A normal distribution of distances between sites? In other words, which of the following curves do you think BEST approximates the distribution of the number of nucleotide pairs between two occurrences of a short sequence motif?

• A)Curve M
• B)Curve H
• C)Curve K
• D)Curve L

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Definitions:

MPC

The marginal propensity to consume, which measures the portion of additional income that an individual spends on consumption instead of saving.

Multiplier

In macroeconomics, a factor that quantifies the effect of an initial change in the economy (such as investment or spending) on the total level of economic activity.

Automatic Stabilizers

Economic policies and programs designed to offset fluctuations in a nation's economic activity without additional government action.

Transfer Payments

Payments made by the government to individuals or groups without receiving any goods or services in return, such as social security or welfare benefits.