True or false particles of minerals call grains give a rock its texture

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16

Pls me i need this ! each cell has genes activated depending on it's job and what kind of cell it is. it is the presence of that causes the repressor protein to fall off and unblock the gene on the lac operon. if a gene is turned on then it is being an additional circular chromosome found in some bacteria that is used in genetic engineering.

Someone with these questions! pls 30 pts