All the options provided are examples of traits that DNA can code for. Here’s a brief explanation of each:
A. Risk for certain diseases - Certain genetic variations can increase the likelihood of developing specific diseases, thereby influencing an individual's health risk profile.
B. Height - Height is a polygenic trait, meaning it is influenced by multiple genes as well as environmental factors.
C. Eye color - Eye color is determined by several genes that affect the pigmentation of the iris, making it another trait coded by DNA.
D. Hair color - Like eye color, hair color is influenced by multiple genes that determine the type and amount of melanin produced.
In summary, DNA codes for all these traits.