I don't know that if a person's DNA is being re-sequenced, they die. I will leave you to that and neither agree or disagree because I don't know that.
Look I am new here so everyone please understand I am not trying to start an argument, I am just addressing a few points.
The term “DNA sequencing” refers to a process used to determine the order of the nucleotides of a particular gene. All humans differ from each other in the sequence of their genetic code by about one base out of every 1000. Thus, when one human DNA sample is sequenced, that same sample taken from the next human will, of course, be different. The term “DNA re-sequencing” simply refers to re-sequencing that same segment from another source, looking for the differences in the alleles.
As applied to the episode “Genesis” the term “re-sequencing” or “re-sequenced” implies an active process in which the DNA of all the crew-members was being altered by a synthetic T-cell virus. In other words, the crews DNA was being actively changed in order to have it express a completely different genotype. This process is known as Mutation.
T-cell viruses are actually RNA retroviruses associated with cancer, a disease in which human cells are mutated into creating something they were not meant to create. Mutations of this type are typically severely detrimental to the host organism.
The T-cell referenced in the episode “Genesis” was said to be activating the “latent introns” of the crew. According to Biology Online, Introns are “non-coding, intervening sequences of DNA that are transcribed, but are removed from within the primary gene transcript”.
In other words they don’t code for anything, and certainly not for every evolutionary ancestor found in humanities past. One origin for Introns is that they originally were retroviruses themselves which attached to our genetic code and are now still along for the ride. But note that in the formation of mRNA (messenger RNA) they are deleted completely.
If Riker’s, and everyone else’s, latent Introns were being activated, any code they contained would have to be transcribed onto the Exons, or coding sequences, of the DNA. Such a process would lead, again, to genetic dysfunction, or disease, rather than genetic alteration leading to genetic re-expression.
So ultimately any such T-cell virus would simply kill the crew.
You brought up two other points. I know Troi was “de-evolving” into an Amphibian. My fish comment was meant to illustrate my point about demeaning the crew. I am trying to be delicate here. Especially as a woman.
As for half of the crew eating the other half, perhaps a bit of hyperbole, but since the crew was changing into all types of various creatures, all it would take is a few good snakes lurking around, a feral cat or two, a wolf, or even a grizzly bear, and, well, you get the idea.
Like I said, as nothing but entertainment, the episode did have its creep factor and was fine. But as a story the premise was ridiculous, the result of which allowed the writers to poke a bit of fun at the characters by demeaning them with what they turned into.
Picard a lemur. That would settle the old question of who was the better Captain between him and Kirk, wouldn’t you say?