Question

Which trait is determined by genetics alone?

1)skin color

2)athletic ability

3)blood type

4)big muscles


THERE IS ONLY ONE ANSWER NOT TWO ANSWERS

Answer 1

(3)blood type. that would be the answer tell me if it's right then put a verified answer if you don't mind.

Answer 2

3) blood type

Step-by-step explanation:

Skin color can change due to exposition to UV or radiation of the sun.

Athletic ability can vary depending on whether you train or not.

Big muscles will depend on the physical activity. No activity at all, small muscles.