You are in a laboratory attempting to identify a genetic defect responsible for a disease. you believe you have located the gene that results in a faulty protein—but you aren't sure! how could you be sure you have located a section of dna that encodes for a protein?
answers -write down the sequence to see what amino acids might be linked together
-allow the dna to be transcribed to rna and see what protein results
-compare the faulty protein to the dna

The correct answer would be "Allow the DNA to be transcribed to RNA and see what protein results".

The expression of any gene ultimately leads to the formation of a protein in a cell.  

First, the nucleotide sequence of the DNA (deoxyribonucleic acid) or gene is decoded or transcribed into the nucleotide sequence of mRNA (messenger RNA).  

mRNA then carry this code to the ribosome where it is used to synthesize the polypeptide chain or protein.  

Thus, if anybody wants to check if a section of DNA encodes for a particular protein then he or she must allow it to transcribed to RNA and then observe the protein formed.

B. Allow the DNA to be transcribed to RNA and see what protein results.

Explanation:

then that particular organisms become extinct.