How Can a Gene That Contains Introns Be Made Shorter

question 48

Multiple Choice

How can a gene that contains introns be made shorter (but remain functional) for genetic engineering purposes?

• A) using a restriction enzyme (endonuclease) to cut the gene into shorter pieces
• B) using reverse transcriptase to reconstruct the gene from its mRNA
• C) using DNA polymerase to reconstruct the gene from its polypeptide product
• D) using DNA ligase to put together fragments of the DNA that code for a particular polypeptide

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Definitions:

Odds

The ratio of the probability of an event occurring to the probability of it not occurring.

Case-Control Study

is an observational study design in which two groups differing in outcome are identified and compared on the basis of some supposed causal attribute.

Obesity Status

A classification based on body mass index (BMI) to identify overweight and obese individuals based on their body fat.

Relative Risk

A measure used in epidemiology to determine the strength of the association between an exposure and an outcome, comparing the risk in the exposed group with the risk in the unexposed group.