Comic 258 - Polaris Book 2 Chapter 1 page 21

27th Nov 2020, 11:28 AM in :Polaris Book 2 Chapter 1
Polaris Book 2 Chapter 1 page 21
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Panda Cop 1st Dec 2020, 4:25 PM edit delete reply
Panda Cop
Maybe the junk dna actually does somthing we dont understand?
straker 1st Dec 2020, 7:12 PM edit delete reply
straker
Yulian has it partially right. There are introns (non coding sequences) along with repeating sequences and what we call pseudogenes. These are genes that may have functioned at one time but through mutations, de-evolved into nonsense sequences. This is how we descended from common ancestors who also produced lines that would become fish, reptiles, amphibians, worms, and other species.
Panda Cop 2nd Dec 2020, 4:25 AM edit delete reply
Panda Cop
This stuff is so interesting. I always found it so wild a human fetus seems to go through stages of evolution like being an amphibian with gills, and a hairy mammal with a tail, then a human.

Also with genetic markers we have a bunch of information that is turned off but can possibly the activated again so it can express itself.

I dont know all the terms as well as you do. But my scientist friend was studying if it would be possible to freeze then thaw out humans and keep them alive. He was studying the frog that can do this as it produces its own antifreeze so it can be "frozen solid" without its cells bursting. He found we have this genetic marker also but it is turned off when in the frogs it is turned on. How wild.

So to my knowledge they never did any tests on this but theoretically if they could turn on this genetic marker and get it to express itself then these people could survive being frozen. Like being used to preserve people to "time travel" for like a long distance space mission.
straker 12th Dec 2020, 10:35 PM edit delete reply
straker
Your friend is right. A lot of our genes are corrupted and non-working ancestral genes. While a lot of our "human" genes are mutated but still fully functional variations on themes that still endure. Some of these include aerobic respiration, tetrapod (two arms two legs), bilateral symmetry, and a host of others that we retain with fish. A lot of evolution is random dumb luck. But natural selection dictates that whatever just happens to be "Fit" for the current environment will be the one species variant that survives and outcompetes it's sister variants. This is why we outcompeted Homo neanderthalis. Although, there is some evidence of interbreeding between sapiens and neanderthalis. Usually, this produces mules or non fertile offspring, but some speculate that this is part of what cuased certian human ehtnitcities to be hairier than others. And there are some racialists who think that certian ethnicities are either superior or inferior due to the presence of neanderthal DNA depending on "a certain point of view".
Panda Cop 13th Dec 2020, 2:59 PM edit delete reply
Panda Cop
Yes i watched something about interbreeding and evolution. Like hybrids accellerate evolution i saw somthing with howler monkeys, black howler monkeyscan interbreed with crested ones but the hybrids are rejected by both sides and pretty mich jist became a new species forced into a new habitat because they were not accepted by either side who have their own habitats. Not all hybrids become infertile. Probably the racialist thing is true and we are like all animals who are very closelt related but hybrids of different things so we end uo beign different. As for better or worse with neanderthals i think it its like better or worse for whatever enviroment at whatever time. Just like with animals that adapt to envoriments and conditions. Pretty interesting stuff unfortunately it is pretty much illegal to say humans are different these days. Ah well. Hopefully we will see more penguins being cool and hanging out
straker 18th Dec 2020, 12:29 PM edit delete reply
straker
Right. There are some fertile hybrids such as ligers where only the female liger is fertile (lion/tiger hybrid). Some make the mistake of calling mixed breed dogs hybrids. In reality, all mixed breed dogs (such as puggles and labrador-doberman mixes to name just two) are still within the same species.