Babunyanya yenu hambuglar ndiye huyu

http://www.bbc.com/news/...nce-environment-38800987

Ai...Mimi hii mambo ya evolution yanichanga sana


If life started out in Turkana, how come they say Bantu emigrated from Congo and Nilotes from South Sudan?

Or we moved there as some monkey like creature but came back as humans

Either way evolution pia needs faith

By the way, what made our forefathers migrate out of those areas to where we are now here in Kenya, for example? Wars, droughts... what was it?

They migrated from Turkana due to diseases and green pastures then some of their offsprings(read Turkana's) decided to move back to the desert!

The struggle or search for resources is usually the main reason. The ancestors of aborigenes left Africa perhaps 70,000 years ago and ended up in Australia around 40,000 years ago migrating slowly on the coastlines because there was a ready source of food along the coast.

More recent migrations such as the Bantu migration likely happened because of hostile neeighbours who were competing for the same resources e.g. food, land, water etc.

Evolution does not need faith. You just need to be patient and understand the science behind it. Humans did not evolve from a monkey like creature overnight. Gradual changes due to natural selection over millions of years that accumulate over time are what cause one species to evolve into another.

Using a simple example: How did Lions evolve mane?
We know that ancient Lions did not have mane because cave paintings of lions show only a scruff or small beard below the neck. But scientists have proven experimentally that female lions prefer lions with more mane and darker mane. They have also proven that lions with darker mane have more testosterone and thus are more likely to win a fight. All this means that a lion with more mane is likely to reproduce and bear more offspring. So with each generation, there are likely to be fewer maneless lions and more lions with large dark mane. If Lions were left to themselves and you came back 1000 years from now, you might only see lions with dark mane.

The same concepts of natural selection can be applied to explain human evolution.

This simple example requires faith...It is unbeliavable...What caused the mane to grow or the mane?

Good question.
Some characteristics occur due to genetic mutations. As an example some men have a ridiculous amount of body hair including a thick mat of hair on their back. If we lived in the wild and women found body hair attractive, these men would father more offsprings.

Also if we lived in a cold environment then those freaks with plenty of body hair would survive and the rest of us would disspear. This is likely how the woolly mammoth evolved from the Asian elephant.

Perhaps the best example of genetic mutation in humans is the fact that solomon islands natives are black yet 5% of them have blonde hair. How did this happen? Its not because some of them have white ancestors. Its due to genetic mutation that can be passed down from parents. Some black Africans are also born with blue eyes.


Note that nowadays human beings are less likely to evolve because people have a limited number of children. But among animals, it is the alpha male in every group who passed his genes to the next generation in large numbers. So if this alpha male has a unique genetic mutation then it is likely to cause more change.

ah! Melanesia! awesome place! really homogenous people of all spectrum. I walk around and see people with curly afro type hair and skin that looks like mine. some have more kinky hair, some look like waswahilis. has anyone seen photos of people from Bougainville? people have lived here for the last 33k years.