Evolution?Not for us anymore.


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  I love biology and I try to teach my daughters things that bug their minds. The first thing that bugs them is when I say, hey whats that leopard? They answer "an animal" and about that ants? " a bug". I answer that yes it is a bug, but also an animal like a leopard and us. My youngest answered quickly: "But we are people, not animals". Yes we are animals, and guess what? we are apes and more specifically from the family Hominidae. This family groups specific genus includes us Homo, and Gorilla (Gorillas), Pan (Chimps), Pongo (Orangutans). So yes, we had the same ancestors in the past, but time and evolution helped to make us a bit different from other apes. And how is evolution affecting us right now?


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  I said in a post a while ago that practically we escaped from evolution, since technology and medicine help us to not die and reproduce ourselves. Even those that can't reproduce naturally, medicine invented artificial insemination and in vitro reproduction. But once in a while, we have some traits that appear in the population due to evolutionary pressure. One good example is the resistance to Malaria by humans who have one mutated gene for sickle cell anemia. My wife has that gene and passed it to my daughter. This trait appeared in Africa at a time when Malaria treatments weren't effective. So people died, and people with this trait survive and are passed to their descendants. Brazilian ethnicity is very influenced by African genes, because Europeans brought many of them to be slaves. My wife, like many Brazilians, has ancestors from Africa, and she got this gene. They don't have sickle cell; they have just one allele with the mutation, since you need two alleles to have the disease.

  But for sure, evolution stops when we start to deceive nature. Not saying that is good. For example, there is a known gene mutation that confers resistance to HIV infection. However, nowadays, HIV is well controlled by medications. There isn't a cure, but no one dies. In addition, we have sex protection that avoids contamination by the virus. So people who aren't resistant to HIV are still reproducing and generating fertile individuals. So this mutation won't be prevalent, unless..

  ... unless we decide to modify every new baby's gene to have this mutation and be resistant to it. That will be maybe the first induced product of evolution. There was a scientist in 2018 who did that to a couple of babies; he got arrested, and the identities of the children are secret. Maybe a new pandemic can also provide a type of pressure to select only individuals resistant to this new microorganism. Another option is an evolution like we watched in Wall-E, where the humans are all static, obese, sit in a chair just using electronics while robots do all for them.


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  If we are different as organisms in the future is because we caused these changes by ourselves. Technology and medicine have evolved a lot and can go even further. The only pressure that nature can bring to us is probably something that will create an extermination event, which won't help us to evolve into anything. Maybe I am sounding apocalyptic, but that is the truth. Environmental breakdown, astronomical or geological events are the ones that will put a big pressure on us, but that will be our end.


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  Eu adoro biologia e tento ensinar às minhas filhas coisas que as incomodam. A primeira coisa que as incomoda é quando eu digo: "Ei, o que é aquele leopardo?". Elas respondem "um animal" e, sobre as formigas? "um inseto". Eu respondo que sim, é um inseto, mas também um animal como um leopardo e nós. Minha filha mais nova respondeu rapidamente: "Mas somos pessoas, não animais". Sim, somos animais, e adivinhem? Somos macacos, mais especificamente da família Hominidae. O gênero específico desta família inclui nós, Homo, Gorila (Gorilas), Pan (Chimpanzés), Pongo (Orangotangos). Então, sim, tivemos os mesmos ancestrais no passado, mas o tempo e a evolução ajudaram a nos tornar um pouco diferentes dos outros macacos. E como a evolução está nos afetando agora?


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  Eu disse em um post há algum tempo que praticamente escapamos da evolução, já que a tecnologia e a medicina nos ajudam a não morrer e a nos reproduzir. Mesmo aqueles que não conseguem se reproduzir naturalmente, a medicina inventou a inseminação artificial e a reprodução in vitro. Mas, de vez em quando, temos algumas características que aparecem na população devido à pressão evolutiva. Um bom exemplo é a resistência à malária em humanos que têm um gene mutado para anemia falciforme. Minha esposa tem esse gene e o passou para minha filha. Essa característica surgiu na África em uma época em que os tratamentos para malária não eram eficazes. Então, pessoas morriam, e pessoas com essa característica sobrevivem e são passadas para seus descendentes. A etnia brasileira é muito influenciada por genes africanos, porque os europeus trouxeram muitos deles para serem escravos. Minha esposa, como muitos brasileiros, tem ancestrais da África e ela herdou esse gene. Eles não têm anemia falciforme; eles têm apenas um alelo com a mutação, já que são necessários dois alelos para ter a doença.

  Mas, com certeza, a evolução para quando começamos a enganar a natureza. Não estou dizendo que isso seja bom. Por exemplo, existe uma mutação genética conhecida que confere resistência à infecção pelo HIV. No entanto, hoje em dia, o HIV é bem controlado por medicamentos. Não há cura, mas ninguém morre. Além disso, temos proteção sexual que evita a contaminação pelo vírus. Portanto, pessoas que não são resistentes ao HIV ainda estão se reproduzindo e gerando indivíduos férteis. Portanto, essa mutação não será prevalente, a menos que...

  ... a menos que decidamos modificar o gene de cada novo bebê para que ele tenha essa mutação e seja resistente a ela. Esse será talvez o primeiro produto induzido da evolução. Houve um cientista em 2018 que fez isso com alguns bebês; ele foi preso e as identidades das crianças são secretas. Talvez uma nova pandemia também possa exercer algum tipo de pressão para selecionar apenas indivíduos resistentes a esse novo microrganismo. Outra opção é uma evolução como a que vimos em Wall-E, onde os humanos são todos estáticos, obesos, ficam sentados em uma cadeira usando apenas eletrônicos enquanto robôs fazem tudo por eles.


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  Se seremos diferentes como organismos no futuro, é porque nós mesmos causamos essas mudanças. A tecnologia e a medicina evoluíram muito e podem ir ainda mais longe. A única pressão que a natureza pode nos impor é provavelmente algo que criará um evento de extermínio, o que não nos ajudará a evoluir para nada. Talvez eu esteja soando apocalíptico, mas essa é a verdade. A degradação ambiental, eventos astronômicos ou geológicos são os que nos pressionarão muito, mas esse será o nosso fim.



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(Edited)

Aparentemente leo materiales muy poco científicos, porque en uno de ellos, decían que en el futuro los humanos serán ciegos a causa de la luz azul de los dispositivos, y que posiblemente también tendríamos las manos deformadas por el tipo de agarre que usamos con los móviles 😂

!PIZZA
!LOLZ

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ejejjeje
E un error común mezclar la evolución de Darwin con la teoría de Lamarck. Él solía decir que cualquier característica adquirida se transmite a los hijos.
Por ejemplo, hay un pez ciego en cuevas. La teoría darwiniana dice que en cuevas oscuras, tener ojos funcionales no ofrece ninguna ventaja. De hecho, mantener los ojos consume energía. Los peces que nacieron con degeneración ocular tenían más energía para gastar en otros órganos y eran más eficientes en su reproducción. Después de un tiempo, ya no se vieron más peces con ojos. Entiendes la diferencia? xD

!BBH
!DUO

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Creo que eso está pasando con los cerebros en los humanos! 😂 A veces creo que algunos ya nacieron sin ellos!

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!BBH

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Mano eu acho q no futuro o negocio vai ser chips na cabeça e peças de metal e robôs em nossos corpos. Tipo estou com o fígado fudido, vamos por um de metal, estou com um pulmão estourado, vamos ter uma solução artificial para isso e além disso acho que o câncer e AIDS por exemplo teremos vacinas e coisas do tipo, mas claro q tudo no futuro haha.

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(Edited)

Amazing to read about your wife being AS, a trait of African decents. I have always wondered if this trait and that of sickle cell is a thing outside Africa. From your blog, I'm seeing it's a thing with people of African decent so basically with the African gene one is AA?

That being said, the end result of every advancement in human race is destruction. I hope as we evolve we find a better way to coexist peacefully with nature

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It is something very present in Brazil… her cousin received the alleles from both parents so he has the disease… it is a bit problematic for him lots of blood transfusions during his life. He is and adult now but still he has some health problems …

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(Edited)

Wow! and to think people say it's non existence o that they only test AS and SS in Nigeria. This has been really informative and helpful. Thank you 🙂

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I have read recently an article stating that with the evolution we are going to have less teeths in the future (I don't remember why now tough) and an other saying brains are getting bigger

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I agree with you too that if change happens in future it is because of us because we use technology today.

I was also the students of biology and when we read the evolution theory of Lamarck about giraffe, i put imagination into another world if such evolution happens in future 🤣 like giraffe needs to extend their neck to eat grass or leaves and we all time use mobile phone, what if our body turned in a Way 😺🤪

Don't be serious, it's my imagination world in college days 😂 🌎

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Regarding ancient humans, I also studied it in elementary school, but there is a mistake in our understanding of human evolution as Muslims, because in Islam, the ancestor of humans was Adam, who was sent down from heaven, had a sturdy body with a length of seventy cubits and a very long grave, and that is explained in the holy book of the Koran,

not as depicted in the history book discovered by Eugene Dubois.

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I learned that we can’t mix science and religion. Faith is beautiful and help us , however we can’t use it as basis of true knowledge of how things were formed. They are non overlapping sources of information. Religion can answer the why, and science can answer the how.

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