Ever wondered, what’s the point of having a fish. They just sit around all day. Sure, the colors are nice, but even that dies off after a while. GloFish are the solution. They are descended from genetically modified fish, so they haven’t gone through any injections themselves. They were originally bred to help detect pollution problems. (Honestly, I’m not sure how, that sounds weird.) They are zebra fish, but get this. They glow! To understand this, we need to dive into the science of genetic engineering. Genetic engineering is altering an organism’s genome, or their genetic material.You do this by adding a gene from another creature. Genetic engineering is also used to make new plants, and animals. One way to do this is electroporation. You shock the cell, and it makes it weak, so you can inject the DNA. For animals, it is mainly microinjection. Where you inject the purified DNA straight into the nucleus of the cell. Microinjection is where you use a glass micropipette, or a container, to inject a liquid. It is typically done at microscope zoom, 200x. Cool, right? Explore yourself at:

https://en.wikipedia.org/wiki/Genetic_engineering#Gene_isolation_and_cloning

https://www.glofish.com/