To cause cancer, tumor suppressor genes require allele(s) to be mutated and therefore are considered . The mutation results in a of function.

Two

Recessive

Loss

Explanation:

To cause cancer, tumor suppressor genes require two alleles to be mutated and therefore are considered recessive. The mutation results in a loss of function.

[content deleted] - user123802726recklesschicken

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation: