Question

explain the (in one or two lines) function of the following
a. promoter
b. tRNA
c. exons ​

Answer 1

A) Promoter is a marketing professional responsible for demonstrating the features of a product to an audience or client.

B) TRNA (A transfer RNA)  is an adaptor molecule composed of RNA  that serves as the physical link between the mRNA and the amino acid sequence of proteins.

C) An exon is any part of a gene that will encode a part of the final mature RNA produced by that gene after introns have been removed by RNA splicing.

Hope it helps ..

Answer 2

In genetics, a promoter is a sequence of DNA to which proteins bind that initiate transcription of a single RNA from the DNA downstream of it. This RNA may encode a protein, or can have a function in and of itself, such as tRNA, mRNA, or rRNA . Rest above mentioned is correct except the definition of promotor gene