Question

which phrase is the best definition of a gene?
o a specific segment of dna on a chromosome
the dna found in gametes
o all of the dna that makes up a chromosome

Explanation:

A gene is defined as a specific segment of DNA on a chromosome that contains the instructions for making a particular protein or RNA molecule. Gametes contain many genes, not just one gene. A chromosome is made up of many genes (and other DNA sequences), not just a single gene.

Answer:

a specific segment of DNA on a chromosome