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VIDEO: "Family Guy" explores cave-couple sex and fighting
Sex with cavemen helped modern humans
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"The cross-breeding wasn't just a random event that happened, it gave something useful to the gene pool of the modern human," said Stanford University's Peter Parham, senior author of the study in the journal Science.
Equipped with knowledge of the genome of the Neanderthals and the Denisovans, of whom a tooth and a finger bone were discovered in a Russian cave last year, researchers scoured the data for hints of what genes crossed over.
Scientists already knew that about four percent of Neanderthal DNA and up to six percent of Denisovan DNA are present in some modern humans. This study took a close look at a group called HLA class I genes which help the immune system adapt to fight off new pathogens that could cause various infections, viruses and diseases.
Researchers traced the origin of one type, HLA-B*73, to the Denisovans, who likely mated with humans arriving in West Asia on their way out of Africa. More
"Humans" According to Buddhist Cosmology
There are three spheres (sensual, fine material, and immaterial) in this world system. But there are countless world systems in all directions. Humans within this world system are not limited to Earth. We have been to the stars, and many reside there. Everywhere things evolve, devolve, and repeat. The history of life on this Earth is only known to a few.
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But Cremo's findings do accord with the wisdom of the East. Indian mythology (indeed mythologies from around the world), cosmology, and spiritual history (Vedas) tell an altogether different story covering billions of years, cosmic cycles, past empires, space flight, extraterrestrial visitations, other worlds, life on other planets in this very solar system, and much more. The Buddha adopted much of this cosmology. And apparently the Egyptians and Sumerians were aware of it.
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That Homo sapiens (modern humans) mated -- or were combined with since different species cannot produce viable offspring by simple mating -- should surprise no one. Homo floresiensis were "hobbits." And yet they were human. "Human" is a very labile term.
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