Which of the following definitions of gene are acceptable?
A.
A gene is all the DNA that encodes the primary sequence of some final gene product, which can be either a polypeptide or an RNA with a structural or catalytic function.
B.
NIH: A gene is the basic physical and functional unit of heredity. Genes are made up of DN Some genes act as instructions to make molecules called proteins.
C.
Wikipedia: A gene is a sequence of nucleotides in DNA or RNA that encodes the synthesis of a gene product, either RNA or protein.
D.
A gene can only code for proteins.