Recent research on emotionality produced a mouse with a nonfunctional gene for normal fear behavior.This mouse exhibits behavioral indications of being relatively fearless and is a typical example of ___ research.
A)knockout gene
B)antisense RNA
C)antisense DNA
D)gene transfer

Question

Quizplus · Accepted Answer

This question is referring to knockout gene research, which involves selectively inactivating or "knocking out" a specific gene in a living organism to observe the resulting changes in phenotype (observable characteristics). In this case, the nonfunctional gene in question is likely one that plays a role in regulating fear behavior, which has been disrupted through the knockout process. Antisense RNA and DNA and gene transfer are all related techniques for modulating gene expression, but they are not the specific method used in this case.

Recent Research on Emotionality Produced a Mouse with a Nonfunctional