What is a condition caused by some strains of staphylococci and streptococci in which toxic enzymes produced by the bacteria digest the connective tissue and spreads into muscle layers called

Necrotizing fascilitis

Explanation:

It is a flesh eating disease that causes death to parts of the body's soft tissues such as the connective tissues and spreads to the muscles.

It is caused by multiple types of bacteria such as some strains of staphylococci and Streptococci. They do so by producing toxic enzymes which in turn digests these soft tissues.

Prevention include wound care and hand washing to prevent infection.

It is treated by surgically removal of the infected tissues and intravenous antibiotics.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.