<span>nerve cells need b 12 for proper functioning</span>
A gene is a section of DNA that codes for a trait or other functional product so the answer is B. gene :)))
i hope this is helpful
have a nice day
The DNA carrying a silent mutation will have no gene expression or result on the phenotype or physical appearance of the organism. Silent mutations code for the same amino acid resulting in more genetic diversity, having a genotypic advantage, but providing no noticeable differences.
