A gene can best be defined as________.

Question

Quizplus · Accepted Answer

A gene is a segment of DNA that carries the instructions for one polypeptide chain. This definition is the most accurate as it encompasses the definition of a gene as a unit of inheritance that carries genetic information and guides the synthesis of a specific protein or RNA molecule. Option A is incorrect as noncoding segments of DNA are not necessarily genes. Option B is incorrect as a three-base triplet is a codon, not a gene. Option C is partially correct as RNA messenger molecules carry genetic information, but not all RNA molecules are messenger RNAs, and not all genes code for polypeptides through messenger RNA intermediates.

A Gene Can Best Be Defined As________