In the construction of an expression vector,a signal sequence
A) allows for the expression of a gene in a particular tissue only.
B) allows the expression of a gene to be turned on or off.
C) allows the gene product to be directed to an appropriate location.
D) makes a gene responsive to hormonal stimulation.
E) allows for the expression of a gene in all types of tissues.

Question

Quizplus · Accepted Answer

A signal sequence is a stretch of amino acids that directs the gene product to a specific location (e.g. cell membrane, nucleus, endoplasmic reticulum). It does not control tissue-specific expression or regulation of the gene, nor does it respond to hormonal stimulation.

In the Construction of an Expression Vector,a Signal Sequence