Answer:
I think the answer is C. regulation.
Explanation:
I hope this helps! Correct me if I am wrong.
An example of this would be eye color. You can put contacts in changing the color but not necessarily changing the genes.
The Doppler Effect is also known as red shift. Red shift shows the distance of galaxies. The redder the shift then the further away the galaxy, however the bluer the galaxy then the closer it is. Red Shift shows that the universe is continuously expanding. <span />
The answers is chromosomes
