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Aboriginal Australians, Pacific Islanders carry DNA of unknown human species, research analysis suggests: People from Papua New Guinea and north-east Australia carry small amounts of DNA of an unidentified, extinct human species, a new research analysis has suggested. (abc.net.au)

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[–]_themgt_ 14ポイント15ポイント  (0子コメント)

Very interesting. Some discussion of a previous paper from Bohlender, one of the same researchers:

They do find that "Such comparisons indicate that archaic gene flow into Europe came primarily from Neanderthals and support the view that archaic populations were much smaller than those of early modern humans, which supports their theory but, when it comes to Melanesians: they expose an inconsistency, and point out that "Although this inconsistency may be a statistical artifact, it could also result from an incorrectly specified model. For example, Homo erectus may have contributed genes to populations of Denisovans (Prüfer et al., 2014, p. 48) or to modern humans in Melanesia (Mendez et al., 2012)."

[–]DogfaceDino [スコア非表示]  (15子コメント)

Question: What defines a species?

When I was in school, they taught that a species was defined by their ability to mate and produce fertile offspring. Clearly the human species mated and produced fertile offspring. Where is the line drawn between species?

[–]Joy2b [スコア非表示]  (0子コメント)

It's atypical for two species to even try to mate, and that it requires more luck than a lottery winner has to create fertile offspring.

Mating successfully within one's own species is hard. Mix in another species which has no obligation to maintain the same mating behaviors, body temperature, egg release timing, etc... They could be compatible, but why would they be?

It's rare enough that breeding a liger will get you a stream of disbelieving tourists there to take pictures, and some interesting academic papers.

[–]MahLovelyLadyLumps [スコア非表示]  (5子コメント)

A Chihuahua and Great Dane can't physically mate to produce offspring on account of one being tiny and the other being huge. Are they different species?

[–]DogfaceDino [スコア非表示]  (0子コメント)

I feel like you're trying to trick me into going into an uncomfortable level of detail about doggie sex positions.

[–]kfoul [スコア非表示]  (1子コメント)

Physically, their size may prevent them, but genetically, they could still breed. And through artificial insemination, which is is how most livestock-type animals are bred, it's definitely possible.

[–]FlatusGiganticus [スコア非表示]  (1子コメント)

https://www.petsmartcharities.org/adoption-stories/chihuahua-and-great-dane-mix-score-a-forever-home-together

[–]MahLovelyLadyLumps [スコア非表示]  (0子コメント)

But do they have the "ability to mate" with each other and produce fertile offspring as a result of that mating?

[–]ArmouredDuck [スコア非表示]  (2子コメント)

From what I've read, not all offspring between Neanderthals and modern Humans were viable. That, and apparently only Neanderthal X chromosome exists today in Human DNA, which implies a few things about how that interbreeding occurred.

[–]Sam-Gunn [スコア非表示]  (0子コメント)

Good question. The differences between Homo Sapians and neanderthals were close enough that they could interbreed, but far enough apart they're considered different species from humans and denisovans!

[–]grifxdonut [スコア非表示]  (2子コメント)

Donkeys and horses can still breed. This is what I would think of as their closest relationship to this

[–]pendergasdt [スコア非表示]  (0子コメント)

Yes but donkeys and horses don't produce fertile offspring; mules and hinnies are sterile.

[–]DogfaceDino [スコア非表示]  (0子コメント)

That's a good example, actually. Their offspring is infertile, right?

[–]mighty-wombat [スコア非表示]  (0子コメント)

I'm reading reading 'Sapiens: a brief history of Humankind' by Yuval Noah Harari which asks the same question (among others) and answer it. it's really interesting and if you are curious you should read it :p

[–]cgamonitor [スコア非表示]  (10子コメント)

I would love to visit earth 100k years ago. It would be so Lord of the Rings. Hobbits, neanderthals, denisovans, erectus, sapiens, thats 5 distinct hominid species.

[–]L3tum [スコア非表示]  (6子コメント)

Isn't the Homo sapiens the current human?

[–]shadowbannedkiwi [スコア非表示]  (1子コメント)

Homo Sapien Sapien are current humans, or a sub group of Homo Sapiens, our ancestors.

[–]L3tum [スコア非表示]  (0子コメント)

Ah, that explains it. I thought like "Sapiens isn't extinct??"

[–]RevolPeej [スコア非表示]  (0子コメント)

We are the best of the Homos.

[–]cgamonitor [スコア非表示]  (0子コメント)

Yes, but we also existed at that time.

[–]nameerk [スコア非表示]  (1子コメント)

I'm not very well educated in biology, but I have a question if that's alright.

If Homo Sapiens were in fact, Homo Sapiens, is that why they went extinct?

[–]Heimdall2061 [スコア非表示]  (0子コメント)

Could it possibly not be a joke? Is there a way?

[–]dalgcib [スコア非表示]  (0子コメント)

and they all want to kill you.

[–]big_llihs [スコア非表示]  (1子コメント)

except they look pretty much the same, unlike the Tolkien races.

[–]cgamonitor [スコア非表示]  (0子コメント)

I'm not read up on denisovans and erectus, but neanderthals, us, and floresiensis have pretty damn big morphological differences.

[–]chinapolicywonk [スコア非表示]  (1子コメント)

This thread is so getting locked.

[–]skinnycenter [スコア非表示]  (0子コメント)

Yeah, Hitler Youth just knocked a few posts north of this one.

[–]Hastadin 22ポイント23ポイント  (2子コメント)

came for the aliens meme... was disappointed

[–]Jew_in_the_loo 4ポイント5ポイント  (11子コメント)

I would think that would be obvious from simplu looking at the morphological differences between aborigines and literally everyone else.

[–]presbitalien 6ポイント7ポイント  (0子コメント)

doesn't every race have morphological characteristics different than "literally everyone else"?

[–]VestigialPseudogene [スコア非表示]  (4子コメント)

It's way more accurate to look at genetics. Morphology is incredibly subjective, especially when only looking at differences in one species. This can easily lead to inaccuracies.

Similarly with all other animals, looking only at morphological differences won't be accurate enough to predict their genetic similarity most of the time.

[–]HughMcB [スコア非表示]  (3子コメント)

Not really. Most humans have a lot of DNA from other homo species mixed in. In fact the highest pedigree homosapiens is actually people in Africa who did little to no cross breeding with other homo species after the rise of homo sapiens. Of course, racists would hate to think that Africans are actually the truest form of modern man.

[–]dleifsnard [スコア非表示]  (0子コメント)

I agree, they look much different. They also act different too. Bleeding heart Libs will insist that all races are equally intelligent, athletic and highly capable of verbal reasoning however and we'll both be downvoted for taking the red pill.

[–]speech_freedom [スコア非表示]  (0子コメント)

Just give them blankets and put them in reserves for their own good.

[–]BooperOne [スコア非表示]  (0子コメント)

What does this mean for Madagascar?

[–]mighty-wombat [スコア非表示]  (0子コメント)

I'm currently reading 'Sapiens: a brief history of Humankind' by Yuval Noah Harari and I recommend it to anyone interested in this subject

[–]th30be [スコア非表示]  (0子コメント)

Mutants confirmed?

[–]citizen_beyond [スコア非表示]  (0子コメント)

So there are four different species of giraffes now, that can all interbreed?

But we're sticking with Aboriginals and Asians still being the same species? Not even distinct sub-species?

OK, got it. Thanks science.

[–]RevolPeej [スコア非表示]  (0子コメント)

Perhaps that explains their primitive, at least to our eye, looking facial structures.

[–]Smenards -3ポイント-2ポイント  (0子コメント)

I always thought there was something strange about those folks.