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Posted on 08/08/2025 12:25:29 PM PDT by SunkenCiv
The ancestors of all modern humans split off from a mystery population 1.5 million years ago and then reconnected with them 300,000 years ago, a new genetic model suggests. The unknown population contributed 20% of our DNA and may have boosted humans' brain function...
In a study published Tuesday (March 18) in the journal Nature Genetics, researchers presented a new method of modeling genomic data, called "cobraa," that has allowed them to trace the evolution of modern humans (Homo sapiens).
By applying their new method to modern human DNA data published in the 1000 Genomes Project and the Human Genome Diversity Project, the researchers discovered that there were two main ancestral groups that split around 1.5 million years ago, which they called Population A and Population B.
Just after that split, Population A experienced a bottleneck when the population plummeted and likely lost a significant amount of genetic diversity. But Population A grew over time, and Neanderthals and Denisovans branched off from it.
Then, around 300,000 years ago, Population A mixed with Population B, the researchers found. Their genetic analysis suggests that 80% of the genome of all present-day humans comes from Population A, while 20% of our genome comes from Population B...
Who those populations were, however, is not clear. In the study, the researchers noted that "various Homo erectus and Homo heidelbergensis populations that are potential candidates for lineages A and B existed both in Africa and elsewhere in the relevant period."
...But one of the drawbacks to the new model, according to Hawks, is that it is based on the 1000 Genomes Project, which has a low representation of African populations.
(Excerpt) Read more at livescience.com ...
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I have never grown Carnations! Hop over to The (August) Garden Thread and tell me all about it; I absolutely LOVE their scent!
Yep.
In a sense. Not green/gray biologics as we think of them, but from not of this planet. Those procreation with the daughters of men fit, too.
Nephilim.
[When you have too many people in a tribe...]
Or when the ruling class become too greedy, you decide to gather your women, move beyond the frontier, and take your chances with the 4 legged predators.
intelligence is only one critical characteristic among many for survival and longevity
Pareto’s rule, also known as the 80/20 rule, is the principle that roughly 80% of effects come from 20% of causes.
It suggests that a minority of inputs or actions are responsible for the majority of results.
This concept, named after economist Vilfredo Pareto, can be applied to various aspects of life, from business and economics to personal productivity and even language learning.
Half of my family is Greek (from Sparta), but my grandmother had blue eyes (mine are green) and we’ve been told by other Greeks that we’re much too fair-skinned to look Greek. I’m sure I’ll find many surprises.
Hey, weren’t the Homer’s Greeks blond and red haired?
Well, in the Homeric epics some characters are explicitly described with light hair. Achilles, the hero of the Iliad, is called “xanthos” (ξανθός), often translated as “blond” or “fair-haired” (e.g., Iliad 1.197). Menelaus, king of Sparta, is also “xanthos” (Iliad 3.284), and Helen, his wife, is implied to have fair features, possibly light hair, aligning with idealized beauty.
Odysseus is sometimes interpreted as having reddish or auburn hair based on later traditions (e.g., Odyssey 13.431, where his hair is described as thick and wavy, though color is ambiguous).
The Greeks of Homer’s time were likely diverse in appearance, with dark hair (brown or black) being most common, as seen in archaeological depictions and genetic data. Blond or red hair existed but was rare, reserved for standout figures or mythological idealization. Red hair, in particular, was less common than blond and often associated with specific regions or mythic traits (e.g., Thracians, who lived north of Greece, were sometimes noted for reddish hair in later texts like Xenophon’s Anabasis).
“Someone put raisins in the coleslaw.”
🤮 The same people who put grapes in chicken salad.
I have never been so angry.
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