– What “writes” the information on DNA? And how does it adquire that information?

Question

– What “writes” the information on DNA? And how does it adquire that information?

In: 2

Answer 1

Ok. So here’s a good example. The Covid Vaccine!

The pfizer vaccine for Covid 19 is a bunch of bioengineered RNA copies that get injected into your bloodstream. Your cells pick them up (bioengineering magic involved) and then have a bunch of these RNA strands wandering around inside of them.

You have factory structures in your cells called Ribosomes. These read the RNA strand (like swiping a credit card) and use the instructions to build a protein (each 3-letter word on the strand adds another piece to the protein) (in this case the protein folds into an antigen that looks like a spike on the surface of the Covid virus.)

Now, like a lost cat poster, these RNA strands have a bunch of little tags on the end to tear off once construction is done. Because we want to make a LOT of covid spikes to train your immune system, there are a lot of tags. Each time the code is read, a tag gets torn off.

Once there are no more tags, the RNA strand gets thrown in the cellular trash bin.

As for how the DNA gets read… That’s [a bit more complicated] ( https://kurzgesagt.org/portfolio/crispr/) A protein structure will roll down your DNA and read one side of it. It will find a section that says “start copy here”, copy all of the data onto an RNA strand, and then release it into the wild once it hits a “stop copying here” codon.

There are also lots of segments that are commented out, (Histones), and only available to be read if certain conditions are met. (for more information, ask about epigenetics.)

Unless I misinterpreted your question. In which case the simple answer is sex and random mutations going back a billion years or so. (Also thieving bacteria and infectious viruses.)