So you want to be an intelligence analyst. Students occasionally write to me and ask for advice on getting a job in the Intelligence Community. (I became an intelligence analyst at DIA after undergrad. I was there for about three years, and after that, I did a few years of consulting for various intel agencies.) The below is a gist of that advice. It is heavily biased by my own experience, and none of the below is meant to be universal.
Apoptosis, or programmed cell death, is a naturally occurring process in the body. It involves a controlled sequence of steps in which cells signal self termination. Apoptosis works to keep the body's natural cell division process of mitosis in check.
The term also refers to the process of creating such an organism, as in knocking out a gene. The technique is essentially the opposite of a gene knockin. Knocking out two genes simultaneously in an organism is known as a double knockout (DKO).Similarly the terms triple knockout (TKO) and quadruple knockouts (QKO) are used to describe three or four knocked out genes, respectively. knockout mouse (left) that is a model of obesity, compared with a normal mouse. A conditional knockout allows gene deletion in a tissue or time specific manner. This is done by introducing short sequences called loxP sites around the gene.