Yes, this is True, if you didn't you or anything wouldn't be living, the genetic code is basically what makes you, from the physical features to anything else basically.
Answer:
In cases of immune system overactivity, the body attacks and damages its own tissues (autoimmune diseases). Immune deficiency diseases decrease the body's ability to fight invaders, causing vulnerability to infections.
Explanation:
my guess is B. I am probably wrong
A cancer causing gene is caused by a mutation in a gene.
By studying a particular species .
