Question

A gene can best be defined as ________. Select one: a. a segment of DNA that carries the instructions for one polypeptide chain b. an RNA messenger that codes for a particular polypeptide c. noncoding segments of DNA up to 100,000 nucleotides long d. a three-base triplet that specifies a particular amino acid

Answer 1

Answer:

A segment of DNA that carries the instructions for one polypeptide chain.

Explanation:

The DNA is the genetic material of almost all the living organisms but few exceptions are present in case of virus where RNA is present as genetic material.

The phenotype and genotype of the organisms is determined by the gene. Gene is the functional segment of the DNA that codes for the specific polypeptide chain and determines the different morphological characters of the organisms.

Thus, the correct answer is option (a).