But define race in a genomic sense. It's a feat that key genomic experts have not yet been able to accomplish. For instance: http://ewanbirney.com/2019/10/race-genetics-and-pseudoscienc...
Is it? mRNA can code for a protein that detects other mRNA in the same cell, which may reflect any genetic characteristic of the host.
https://www.nature.com/scitable/topicpage/translation-dna-to...
When we say mRNA "executes", that's a cell injesting mRNA, and assembling a protein (polypeptide). For example, the mRNA sequence 'ACU', when 'executed' by a cell, will turn into a Threonine: https://en.wikipedia.org/wiki/Threonine
Of course there is, genes can be turned on/off using transcription factors. Still, the sequence of vaccines are published and easy enough to sequence and analyze, so I don't think something like this could be mass produced.
There's no way for mRNA to scan the rest of your DNA sequence to make an if/else determination. mRNA is just gonna execute once its in the body.
> Or how about some biological ransomware?
Yeah, that's called a poison and antidote / antitoxin. You don't need mRNA for that. Poison someone's food, and as they lie dying, you can offer them the antidote in exchange for something.