Eli5: Why is there only one specie of Humans?

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Why there isn’t variety of human beings like different species of cows, bats and every other mammals?

In: Biology

12 Answers

Anonymous 0 Comments

Is this a homework question?

Anonymous 0 Comments

No one understands your question. They think you mean that there have been other species of human in the past as we evolved. OP MEANS WHY AREN’T THERE CURRENTLY MANY SPECIES/BREEDS OF HUMANS LIKE THERE ARE BIRDS.

Anonymous 0 Comments

The Cromagnins (one type of cave men) were another breed of Homo Sapian but died off. We technically have subspecies of humans (different countries/ethnicities) but phrasing it that way gets you called racist.

Anonymous 0 Comments

Well there have been. We even lived together with for example Neanderthals. There even was some interbreeding between us.

However our species seemingly proved the most adaptable… aaaand maybe also the most capable in genocide.

Other human species would be prime competition and that doesnt end well.

Anonymous 0 Comments

Depends on what you call a species. A cow is a single species (Bos Taurus), but there are different breeds of it.

A Black Angus is very different from a Belgian Blue in the same way that a Peruvian Inca human is very different from a Yoruba African human. Both cows are Bos Taurus, and both humans are Homo Sapiens.

Different breeds were developed to adapt to different conditions and requirements, same with humans who settled different climates and geological regions.

Anonymous 0 Comments

Long ago there was more than one species of human that lived at the same time and even met one another. Since then the Homo sapiens have out competed, or assimilated through interbreeding, the other humans

Anonymous 0 Comments

If you mean “why isn’t there a variety of human beings like there are Oxen, Gaurs, Bison, and Bovines?” the answer is “there is, they’re called Chimpanzees (and Bonobos)”. This is the “Tribe” level.

If you mean “why isn’t there a variety of human beings like there are with Indian Auroachs, “Cattle”, and Yaks?” the answer is “there was, but our ancestors either outcompeted or killed the Neanderthals and Homo Erectus”.

If you mean “why isn’t there a variety of human beings like there are with Hereford cattle, Jersey cattle, and Angus cattle?” the answer is “there is, there are Australian aboriginals, Native Americans, Africans, Turkic people” etc.

The difference between Jersey cattle and people with anglo-saxon blood is that there is economic incentive to keep Jersey cattle strictly differentiated as a breed while despite the best efforts of some of the worst people on earth, you can’t stop people from fucking whatever they feel like.

Anonymous 0 Comments

There used to be other species of human.

They died out before we got to where they lived or simply were out-competed when we lived in the same place and time as them.

It should be pointed out that cow or bat is not on the same level as human.

“Bat” is a grouping on the level of “order”. There are over a thousand different species of bats. In fact about 1 out of 5 of all mammal species are bats.

The equivalent for the grouping bat would not be human, but primates The order primates contains us homo sapiens but also hundreds of other species like all sorts of apes and monkey.

There are fewer primate species than there are bat species, but there are still quite a lot.

With cows it is even worse. All cows you see are the same species. We made them from wild ancestors to modern cows. (The wild cows called aurochs are no longer around.)

The equivalent for bat or primate for cows would be even-toed ungulates. A grouping that includes sheep, goats, pigs and deer but also giraffes, camels and technically all whales and dolphins.

A normal person would never look at a giraffe and a bison and say that they are basically the same thing, but they will look at completely different types of bats, with different appearances, size, behavior, diet and anatomy and group them together under the heading of bat.

Human is a very narrowly defined group to bat. so it makes sense that there are 1400 species of bat and only one of human.

There used to be other species of humans around. Scientist aren’t quite clear if for example counted as a different species of humans or just a different sub-species. They were closer related to us than anything else alive today, but further away from us than any living human is from another.

Other species and sub-species of human were around though.

The problem was that when human started invading the entire world, these other guys had to compete with us for food and habitat. There is some evidence that we may have competed with them directly in a few cases and maybe even killed and eaten each other potentially.

There is quite a bit of evidence that our ancestors and neanderthals have interbred quite a bit, so if you have any Caucasian ancestry, you probably can count the neanderthals among your ancestors too.

The reason why in some cases so many different species of a type of animal can coexist while human only allowed for one to survive has to do with specialization.

With other animals you may have groups that specialize in different types of habitat or that eat different types of plant/creatures, and over time those specialized groups will turn into their own species.

Humans don’t do that. We are everywhere and eat everything. There are no separate species of fruit-eating human and insect-eating human or types of mountain humans or Forrest human or costal humans.

We adapt to those difference with culture not by evolution. It is much faster. You can take a human from one habitat and plop them down in to a different one and they will learn to live like the locals.

There are a few special genetic adaptations to different environments but overall those difference are extremely minor and don’t amount to much.

It also means that there is no room for any other species that tries to do the same thing but is less good at it.

Anonymous 0 Comments

There’s a lot we don’t know or aren’t 100% sure of. If you’re interested in conspiracy/alternative theories, check out Season 3, episode 16 of the show “Ancient Aliens”. The episode is titled “Aliens and the Creation of Man”.

Anonymous 0 Comments

There were, we are just the coolest and outcompeted all the other to become the apex humanoid