Choose the answer that best describes a gene.
A. different allele forms of a trait
B. tightly coiled strands of DNA
C. the center of a chromosome
D. a segment of chromosomal DNA
I think the correct answer from the choices listed above is option B. A gene is a tightly coiled strands of DNA. A gene is the basic unit of heredity and is made up of DNA. It acts as instructions to make molecules. Hope this answers the question.
