Menciona ventaja y desventajas de los homocigotas

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

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.