The trp repressor blocks transcription of the trp operon (B) when the repressor binds to tryptophan.
trp operon or the tryptophan operon codes enzymes for the amino acid tryptophan. The operon is on when the tryptophan is low in amount whereas the operon is off when the tryptophan is low in amount. The operon is an assimilation of five genes.
Repressor is a small protein that is supposed to prevent the synthesis of proteins. It does so binding to the operator gene. Therefore, presence or absence of repressor is a determining factor for an operon to be on or off.
To know more about trp operon, here
brainly.com/question/28239403
#SPJ4
<em>Answer:</em>
Mutations in DNA that do not have an observable effect on the organism's phenotype.
<em>Method:</em>
Search Engine
The answer is B
Hope this helps
The mutation<span> caused by the addition of a nucleotide to an already existing gene sequence is duplication.</span>
Answer:
I just wrote a test I picked
Explanation:
OH_&H+ I will give you a feedback when I get my scripts
