At the chromosomal level, whats the difference between human males and human females? a. all males have a y chromosome, and females do not. b. all males have a x chromosome, and females do not. c. all males have 47 chromosomes, and females only have 46. d. all males have 46 chromosomes, and females have 47.

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.