Height, hair color, eye color, and intelligence are traits passed on by

a. genes

b. chromosomes

c. RNA

Height, hair colour, eye colour, and intelligence are traits passed on by genes. The correct option is A. Genes are found inside the chromosomes which are enclosed in DNA molecules. Genes carry all the information that are responsible for the traits and character found in living organisms. Genes are typically pass from the parents to the offsprings.