where did the human species origenate and spread out from??

Question

im thinking maybe east asia but i dont really know? can you help

Answer 1

The current theory of the origin of H. sapiens is descriptively called the Out of Africa theory.

It states that H. sapiens has lived for the last 250,000 years. The theory is that we may have evolved from the ancestral hominid called H. erectus in an interglacial period 250,000 to 400,000 years ago (evidence that suggests this transition are cranial expansion and significant advancement in tool technologies). The theory has modern man leaving Africa 70,000 to 50,000 B.C..

A variation of the Out of Africa theory, called the Single-origin theory states that H. sapiens originated only within Africa and then migrated out. Direct evidence has been reported that infers that there was a migration event of H. erectus out of Africa and then a speciation event of H. erectus into H. sapiens in Africa. The theory then suggests that there was a second migration event of H. sapiens out of Africa. It is also thought that H. sapiens completely replaced the earlier migrated H. erectus.

Perhaps the most famous, and consequentially the one of the oldest remains of a hominid (common ancestor of chimpanzees and humans) are those of Lucy (Ardipithecus afarensis) found in Ethiopia and date back 3.2 million years. Older specimens have also been found in Ethiopia, which also come from the genus Ardipithecus, but date back 5.8 million years ago. Additionally, in 2001, the oldest remains of the modern human, H. sapiens idaltu were also found in Ethopia, near the city Addis Ababa, which have been radiocarbon dated to 160,000 years old. So, if you are biblically inclined and gleaning reality from the stories in the Bible, then Ethiopia would be your “Garden of Eden”.

Across the world, the oldest “modern” human remains come from:
200,000 years ago (ya) – Dali, China (H. sapiens skull)
160,000 ya – H. sapiens idaltu – Ethopia, Africa
115,000 ya – South Africa
100,000 ya – Qafzeh, Israel
80,000 ya – Mount Carmel, Israel

An alternate theory states that H. sapiens evolved not from H. erectus directly, but from H. heidelbergensis. Evidence of this evolution over a period of 200,000 years comes from remains found in South Africa. Remains of this potential ancestor of H. sapiens have been found in Greece (400,000 years old) and France (200,000 years old), as well.

Paleontologists argue much over the Out of Africa theory. Recently, evidence has been coming forth to contend the Lucy theory. Genetic data from the “Lucy” theory suggests that modern humans originated from Africa about 200,000 years ago with little interbreeding with other hominids. Then, these hominids are replaced by Lucy’s descendants, but there is no explanation how they were all eliminated. Additionally, there is no physical evidence (i.e. artifacts) that supports the Lucy theory.

Molecular biology research into this question has determined that human beings are extremely alike genetically. This means that the DNA between a pair of individuals is more alike than most other species. However, genetic variation has occurred that probably developed due to small populations adapting to an environment. A problem with this genetic evidence that reports human DNA being 99.9% identical is that little study has been made on comparing the epigenetic regions of the human genome. Epigenetic markers are shown to regulate the expression of genes.

Other paleontologists have problems with the Out of Africa approach:
• Conservative fossil evidence tells of modern man emerging 100,000 years ago
• Other evidence suggests modern man evolved independently at several areas (Africa, China and Indonesia)
• Anthropologists who study ancient skulls say modern man descended independently from common ancestors that lived on nearly every continent

Another important note that is involved with the evolution of the modern human being is the Neanderthals. It is known that humans only began to flourish at the time of the extinction of the Neanderthals around 35,000 years ago. Some believe that modern man evolved from the interbreeding of prehistoric humanoids, like the Neanderthals. Study of the skulls of modern man and ancient Neanderthals shows that there are distinctive markings that are shared. The disappearance of the Neanderthal is then suggested to be due to interbreeding. These theorists state that there was never a single migration event that took modern man out of Africa. Rather, the emergence of modern man came from continual commingling of different forms of early humans. The migration would’ve been in both directions and slow at that not a one-way wave.

This is a largely debatable topic. For a complete answer, you’re going to have to do a lot more research.

Answer 2

Can't believe how many Adam and Eve answers you are getting. All based on the biblical myth, of course.

The evidence is pretty clear that humans originated in Africa and spread across the globe from there.

There is some suggestion that apelike ancestors of humans spread from Asia to Africa. This would be ancestors of Orangutans, gorillas, chimpanzees, bonobos and humans. Some would have stayed behind and were ancestors to the orangutans while the others moved back to Africa and were the ancestors of the other four great apes. This hypothesis hasn't been generally accepted (yet) in the scientific community, but we continue to learn new things as new fossils are found.

Answer 3

There are different theories, however the one I'm best familiar with is that humans originated at the horn of Africa spread to Asia and a part went to inhabit Europe. When a land bridge to America (Bearing Land Bridge) opened up people come across it to North America (from Asia to present day Alaska) and migrated down to South America.

Answer 4

Africa. From there, humanity spread north to Europe and east to Asia and the Americas.

Answer 5

Most say from Africa...a few so called experts do say from Asia. But im going with Africa. Thats what most people say at least.
Then again there is always the chance aliens showed up on earth hundreds of thousands of years ago and made love to monkeys - which spawned the human race.

Answer 6

Africa. Funny how these people keep qouting fairytales that originate in Iraq and somehow wound up in the Bible. Too bad they don't know about Agamemnon.

Answer 7

The best fossil evidence indicates that mankind evolved in Africa and then radiated to the rest of the world.

Answer 8

Somewhere in Iran it was called the Garden of Eden the first Humans created there were Adam and Eve.

Answer 9

Central Africa, where the bones of Lucy were found. It's a likely bet.

Answer 10

Recent evidence points to australia
But even if it isnt in Australia most likely Africa
AND not the garden of eden