A signal sequence is Question 17 options: 1) a region of DNA that precedes a gene and is not transcribed. 2) a non-coding region of mRNA.

A signal sequence is

Question 17 options:

1) 

a region of DNA that precedes a gene and is not transcribed.

2) 

a non-coding region of mRNA.

3) 

a set of amino acids that directs the protein to an organelle.

4) 

the region of a ribosome that binds to the promoter.

5) 

a gene that codes for a hormone or neurotransmitter.