The bottleneck that almost wiped out our ancestors.

Another “bottleneck” that our ancestors suffered has been discovered and it seems that more terrible than any other, the bottlenecks that humanity suffered were suffered by our ancestors of the same species, Homo Sapiens, but the event that is announced now occurred about 900,000 years ago and the ancestors of our species Homo Sapiens suffered it, they were pre-humans or proto-humans.

The researchers who made this discovery have used a process that analyzes DNA variations over time. With this process they have calculated the composite probability of current human genomic sequences. The results showed that human ancestors went through a very serious bottleneck. population, reaching only on average about 1,280 reproductive individuals, that occurred between approximately 930,000 years ago to 813,000 years ago.

This bottleneck coincides with a chronological gap in the available fossil record of Africa and Eurasia. Remains from before and after are found, but there is hardly any trace of that time. The bottleneck lasted about 117,000 years during that time, the protomans. , our ancestors were a species on the verge of extinction, it was a time in which every day, every hour, was a challenge, any birth was a blessing, any being that reached maturity to reproduce and care for its children had triumphed.

To cite another curious research published this year 2023 at the end of April and whose results almost coincide in time with the previous research, this speaks of an event that occurred a million years ago and that changed the structure of the brain of our ancestors, there is a difference of 100,000 years between one investigation and another, it seems like a lot, but in DNA studies it is not that much, there are images of error, quite wide margins.

It would be necessary to see how the research evolves, perhaps both events have coincided in time, it is a possibility, the research was carried out by scientists from several American centers coordinated by the Gladstone Institutes and they came to the extraordinary conclusion that approximately one million years ago it occurred an event that they could not determine and that represented a change in the way in which the genes of the human being were folded, making this new way of folding enhance elements that served for the development of the brain.

All of these works are very recent, perhaps new research and the application of artificial intelligence tools will allow us to specify the dates and provide answers to what really happened, perhaps the change in the brains occurred in that same dark era.

The researchers also point to a glaciation as the cause of the bottleneck event. We return to the previous colder dynamic, which meant more droughts, less rain, less food and surely having to face very hungry enemies such as the large beasts of the time, which in Back then they already knew fire and had spears, but imagining having to face a giant bear alone with a spear was a very bad idea.

The problem is not only that the beast could eat you, it is that it hunted the food that you needed to survive, it also occupied the cave that could shelter you and your family in cold times and its territory blocked your way to be able to advance and colonize new lands, the solution was to increase intelligence, learn to collaborate, one against a beast alone was a bad plan, but a coordinated team armed with spears changed the rules of the game when that handful of ancestors managed to overcome the challenges , was able to get out of the bottleneck and begin a path that ended up taking his descendants to what we are now, a civilization of 8 billion humans, 6.2 million times more than those few beings who fought for their survival 900,000 years ago. years.

Thank you for visiting my blog. If you like posts about #science, #planet, #politics, #rights #crypto, #traveling and discovering secrets and beauties of the #universe, feel free to Follow me as these are the topics I write about the most. Have a wonderful day and stay on this great platform :) :)

! The truth will set us free and science is the one that is closest to the truth!