A gene is best defined as
A) three nucleotides that code for an amino acid.
B) a transcribed unit of DNA.
C) a sequence of nucleotides in DNA that codes for a functional product.
D) a sequence of nucleotides in RNA that codes for a functional product.
E) a segment of DNA.

Question

Quizplus · Accepted Answer

A gene is a sequence of nucleotides in DNA that codes for a functional product, such as a protein or RNA molecule. This definition encompasses the entire coding sequence, regulatory regions, and other important sequences within the gene. Option A refers to a codon, which is a sequence of three nucleotides that codes for a specific amino acid within a protein. Option B refers to a transcriptional unit, which may include more than one gene or parts of genes. Option D refers to a codon within an RNA molecule, which may or may not correspond to a gene sequence. Option E refers to a segment of DNA, which may or may not be a gene.

A Gene Is Best Defined as