Yes but cells also help get life to where it is right now and cells will also be changing genes connect with who we are and what we are and without those genes and cells we wouldn't be who we are today. genes do regulate mitosis but not for aerobic respiration genes give use our characteristics like girl,boy. DNA does help repair genes like per say you got a scrape on your leg or arm the DNA would clot so that the bleeding would stop and that would cause it to scab over.
Answer:
Scientists are perhaps some of the smart few that make up the human population and are never short on knowledge. They research and discover and conduct tests to gain more knowledge, but the answer to your question is stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores, and scientist know this because of their research.
Explanation:
