What is a dna fingerprint and how is it used to differentiate between individuals in a population?

All eukaryotic cells contain small bodies called

Methane gas created by a cows flatulence especially in a large herd is a greenhouse gas. true or false.

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.