Complete the following sentence. Gregor Mendel developed the system of ___ cross-breeding in the 1800's.

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.

Match each description of an object’s motion with the position-time graph that represents it. not moving moving with constant speed speeding up slowing down

In what ways does the study of human population differ from the study of wildlife ecology