Posted: Jul 24, 2017 6:38 pm
by Rumraket
DavidMcC wrote:Rumraket, I'm sure you know this, but a ribosome is not a gene!

Yes I should have written that genes encoding ribosomal RNA and proteins exist in many copies. And the highest I've heard of is 700 for one of the proteins IIRC.

Any particular cell might contain millions of ribosomes at any point in time. Which is one of the reasons so many genes encoding ribosomal components are required, because those millions of ribosomes are all constantly in use, and they break down and need to be replaced. So the genes that encode the components of ribosomes can't be transcribed and translated fast enough to replace the rate of breaking down ribosomes if there was only one.