/sci/ - Science & Math

>>15779609
If the inheritance of a trait is Mendelian, then it is possible for recessive genes to spread. If "X" represents the dominant allele and "x" the recessive, then the person expressing the recessive phenotype has the genotype "xx" for that gene, whereas your original brown-eyed Africans would have genotype "XX". Consider the Punnett square of the offspring: all have genotype "Xx" for that trait.

Now if two people with genotype "Xx" breed, their offspring has a 25% chance of being "xx" and expressing the recessive trait. Any two people with "xx" that breed produce "xx" offspring 100% of the time. If society begins to find the recessive phenotype sexually attractive and it isn't an undue burden on one's fitness, then it spreads even faster.

>>15779636
Idk if eye color is Mendelian. Inheritance for many genes is more complicated than a 2x2 Punnett square.

>>15779636
does this mean every human will eventually have bright eyes?

>>15779667
6500 years ago is 2000 years before Abraham.

>>15779609
That explanation is just speculation. And eye colour is not determined by one gene.

>>15779669
this is about Noah, who fathered all mediterrean civilizations starting from Sumer and he wuz a huwite man!
https://www.youtube.com/watch?v=_1OVwuCdkK4

>>15779683
If Noah fathered mediterrean civilizations, who fathered niggers? Satan who fucked an ape?

>>15779690
that homoerectus-fucking incel Ham

>>15779704
Kek.

>>15779609
Stop spreading misinformation. Out of Africa has been debunked countless times.

>>15779748
>Out of Africa has been debunked countless times.
How, for example? And why it's still considered true in scientific community despite it being "disproven"?

>>15779749
It hasn't. He hates blacks so he'll believe anyone who tells him otherwise

>>15779768
You can literally Google the phrase then go down the rabbit hole. Niggers only cope for being the toilet of humanity for all time is that we all came from Africa is out, so what do they have now? Absolutely nothing, and it makes them seethe.
https://www.scientificamerican.com/article/is-the-out-of-africa-theory-out/

>>15779833
>posting an article that just saids the number of migrations out of Africa and its intersecting paths are possibly off not that it didn't happen at all

Yeah, you're a retard. Fuck off.

>>15779848
Oh you didn't read it, cool.

>>15779690
Those are bastards of humans and ape monsters that were exterminated by their own spawn. In turn they will be exterminated by their own mixed blood spawn and so on.

>>15779683
What sub-saharan means? Semites?

>>15779998
>The new findings, published this week in Proceedings of the National Academy of Sciences USA, casts doubt on the second migration out of Africa. "[The researchers] are not denying that it happened," Trinkaus says, "just that it was less important than movement across Eurasia."

In other words migrations from out of Africa happened but outside the initial migration, later ones had less direct impact on Europe. Meaning that Africa to Asia then Asia to Europe are the more consequential specific to archeological studies on European human genome.

Which isn't off much from any of the primary models since the traditional hypothesis relies on migration from East Africa to the Arabian Peninsula then to Asia proper.

>>15779683
Why does he keep repeating that all lebanese have subsaharan admixture, while presenting the case of one who does not ?
I didn't find data for maronites but druzes have very little nigger blood, less than italians and spaniards. It should not be too hard to find untouched families.

Does a person have blue eyes?
If yes, they have a soul and can get into heaven.
If no, the opposite.

And in case you're curious, green eyes are directly descendant from angels.

>>15780143
>>15779833
>https://www.scientificamerican.com/article/is-the-out-of-africa-theory-out/

>most evolutionary biologists and anthropologists believe there were three major waves of migration from Africa to Europe: the first occurring about two million to 1.5 million years ago during the late Pliocene and early Pleistocene epochs; a second during the mid Pleistocene, roughly one million to 500,000 years ago; and ending with the spread of modern humans, 50,000 to 30,000 years in the past.

>The new findings, published this week in Proceedings of the National Academy of Sciences USA, casts doubt on the second migration out of Africa.

The second migration ? So it's not the even one involving homo sapiens, they're talking about neanderthals and denisovans.

>>15780086
blacks

>>15780157
It's an article from 2007, genetics studies massively improved since then, and they still state that second migration (neandersovans) actually happened.

>>15780146
probably because he doesn't want his boys to think he's saying the lebanese are white.

>>15780159
So then all arabs are basically whites mixed with niggers? Wtf?

>>15779609
How does anyone know? The narrative has changed so much in a lifetime. Neanderthal is a dead end. OJ didn’t do it. Dinisovan didn’t exist. My 23and me cannot make up its mind about who my kid’s dad is.

>>15780223
Humans are descendants of neanderthal. All human skeletons that has been found are post-neanderthal only.

>>15780317
But they said no if you went to school twenty years ago. No reason to believe anything they say now. Biologists cannot even decimate the population yet.

>>15779609

Just mentioning, the mutation responsible for the loss of eye pigment is within the promoter region for the pigment gene ... which funnily overlaps with some intron of another gene with so far unknown function, except that knockout of that second gene has highly negative effects on brain development, so one can assume it has something to do with brain development. Now that might just be coincidence since only an intron is affected ... but then again, introns can influence mRNA processing etc.

>>15780329
Is that why the blonde jokes?

>>15779638
blue eyes are a recent mutation and are dictated by one gene, it's unironically a great candidate for studying Mendelian inheritance

>>15780166
okay? and neandertals / denisovans still aren't homo sapien. OOA refers exclusively to the emergence of homo sapiens in Africa and our migration out of the continent. It doesn't refer to Miocene apes in Europe, it doesn't refer to super archaic migrations into Eurasia, it doesn't refer to Homo Erectus Georgicus, it refers EXCLUSIVELY to sapiens.

>>15780329
Can you go into "negative effects on brain development" a bit further?

>>15780374
These genes are called OCA2 and HERC2 (represented as O, o, H and h in Image 2). The simplified explanation is that the OCA2 gene controls pigment in the stroma (the tissue and blood vessels) of the iris (the colored part of the eye around the pupil) and the HERC2 gene is needed to help turn on the OCA2 gene to cause it to produce this pigment, resulting in brown eyes. If a person has a non-functioning OCA2 gene, they will always have blue eyes, because the HERC2 gene can't make the broken OCA2 gene work. Likewise, if a person has a HERC2 gene which doesn't work, the OCA2 gene will “underachieve,” failing to produce enough pigment to make brown eyes, resulting in blue eyes. These two genes aren't directly related to each other, yet they affect each other. In this dependent relationship, both of these genes must work to give an individual brown eyes, a genetic relationship known as “epistasis.” Because of this process, it is actually possible (although rare) for two blue-eyed parents to have a brown-eyed child. If one parent passes on a working HERC2 gene and one passes on a working OCA2 gene, rather than the broken version of each, the resulting child could have brown eyes (Image 3). In addition to this more complex explanation of eye color as an inherited trait, this new study also suggests that all blue-eyed people stemmed from a single common ancestor.
https://collegeofphysicians.org/programs/education-blog/behind-blue-eyes-look-genetic-and-cultural-components-propelled-spread-blue-eyed-humans

>>15779638
Pls, how do you define gene?

you retards actually believe in evolution?

>>15779609
Genes mutate and recessive genes have no issue passing them on. I know mestizo guy with a white wife and all his kids are white (not olive or some variation, but fair) w/ blonde hair. We joke about Jody hiding in the bushes for when he goes to work but yea they're probably his kids and his wife's genetics beat out his shitskin genetics.

>>15780631
I do believe in it because there are a lot of fossils of hominids close to humans that preceed our species, like neandertals, australopitecs, denisovans, heidelbergensis, etc.

>>15780383
Not him but you're still not understanding the basic migration process being stated by OOA. The article you referenced dealt with the prognosis that direct migration impact to Europe i.e from East Africa to North Africa to Iberian Peninsula to Europe proper wasn't present or wasn't as major of a flow event as once thought.

It doesn't challenge the traditional path of migration out of Africa it just highlights Asia as the main intermediary to Europe. So it's basically East Africa to Arabian Peninsula to Asia proper to Europe proper. Which makes sense considering South Indians and Negrito Austronesians populations have phenotypical features that are similar to Africans but are genetically closer to Asians because of the longer isolation hence genetic distance..

>>15780645
how do you know that these fossils were predecessors to modern human and not just different races that lived side by side, that have sense been eradicated? even modern races skulls look considerably different.

>>15780660
>how do you know that these fossils were predecessors to modern human
Because of different dating techniques scientists use. Also the fact that the older they are, the more ape-like, archaic and distant from modern humans features they posses.

>>15780660
>how do you know that these fossils were predecessors to modern human and not just different races that lived side by side
Because that's completely retarded logic working backwards from assumptions based on religious fairy tales. Evolution doesn't negate the existence of God, just the christian god, and what you should really be asking yourself is why you're denying not only science but the traditional beliefs of your ancestors in favor of the demonic god of the jews.

>>15779609
>If every human comes from two ancestors in africa
Doubt, Natural selection is not linear like that when you take millions of years

>>15779609
Because the mutation is extremely simple and doesn't code anything new. You just don't produce larger amounts of pigmentation in the stroma, you turn off that gene. Convergent mutation could cause it.

Alternatively just incest.

>>15780713
>Alternatively just incest.
Based.

>>15780660
>post Asian and European skulls with large chins
>large number of actual Asians and Europeans in person look like pic

So what happened to the strong jaw bones?

>>15780720
>large number of actual Asians and Europeans in person look like pic
Micronutrient starvation during developement.

>>15780150
>green eyes are descendant from angels

Damn it feels good to be angel DNA asuka poster

>>15780731
Is this shopped?

>>15779609
Genes are more complicated than recessive/dominant model

>>15780773
No.

>>15780668
how do you know the dating techniques are accurate, and how do you know the older "ape like hominids" you describe weren't just apes?
>>15780686
those are not the belifies of my ancestors.

how can God be described as "demonic" by your retarded ass if demons don't exist?

how'd you get to the conclusion I'm a chirst chad? I could've easily have been a scientologist, jew, Muslim, or Hindu?

>>15780782
>how do you know the dating techniques are accurate
Just google it. I'm not an expert and just watched a few videos, so i can't tell you in detail.
>and how do you know the older "ape like hominids" you describe weren't just apes?
Because they start to posses features similar to humans. There are no clear distinction between apes and humans in anthropology, just gradual transition from one "archetype" to the other.

>>15780782
>how'd you get to the conclusion I'm a chirst chad? I could've easily have been a scientologist, jew, Muslim, or Hindu?
Because none of those other groups have the same insecurity about their beliefs. They don't feel the need to constantly insert themselves in scientific discussions to promote their infantile worldviews. When someone pops up and starts posting nonsense like
>>15780668
then you can be assured that they're christian, every time because christians are the only major religion with "believers" who feel that they're under personal attack by common scientific concepts.

>those are not the belifies of my ancestors.
Unless your ancestors were Jews or converts who lived in the immediate areas surrounding Judea, then the odds of them converting freely to christianity are quite small. Certainly if they lived anywhere in Western Europe, they were converted at the point of a sword. This was done with such ruthless efficiency that the only surviving information we have about many of the indigenous religions of Europe are from the writings of the Romans who conquered them and, outlawed their religions, and massacred their spiritual leaders.

If you're white then christianity is the religion of the people who massacred and enslaved your ancestors and I can't imagine anything more cucked than willingly following it.

>>15780846
>If you're white then christianity is the religion of the people who massacred and enslaved your ancestors
But our ancestors were monkey apes gorilla niggers from the jungle hood according to science.

>muh ancestors

>>15780862
>>15780846
I'd forcibly convert the remaining 35iq tribal Spearman of north sentinel island via gunpoint if I had the means.

caption: 0AAAAH

>>15780720
that's a picture of a mouthbreather something you probably are if you're not a mewpilled buteykochad in the year of our Lord 2023

>>15780646
OOA states simply sapiens sapiens emerged in Africa, and migrated to Eurasia from there, that's literally it, regardless of the path they took

>>15780862
>But our ancestors were monkey apes gorilla niggers from the jungle hood according to science.
Sure, hundreds of thousands of years ago. White Europeans had at least tens of thousands of years of living freely and worshipping their own gods, the gods of white men, before they were forcibly converted to christinity less than two thousand years ago by Italian manlets. You're literally just accepting the beliefs of your slave masters, identical to the descendants of African slaves, now eagerly following the belief systems of the people who enslaved them as if their people didn't have gods of their own.

Embarrassing to say the least.

>>15780909
See, this guy doesn't understand that his religion can't spread or even sustain itself without violence and is rapidly losing converts to Islam, which is of course in the same boat, but hasn't yet lost its balls and willingness to convert people via force. A thousand years from now, your however many great-grandsons will be arguing that Islam is the traditional religion of white Europeans that his family has practiced for countless generations. As your own prophet said, he who lives by the sword will die by the sword. Christianity had a very successful run of converting people all across the world via force, but now we're quickly approaching the point where another religion arrives to defeat it with that same force.

>>15780946
Nope, I actually have a visible chin sorry to disappoint you though.

>>15780968
>now eagerly following the belief systems of the people who enslaved them as if their people didn't have gods of their own.

You say that as if they have a knowable alternative. Do you know who their ancestral tribes, languages and cultures were? Because even with dna testing they can only give general tracing back to Western and Central Africa. Which both have multiple religions.

Oddly enough following the belief system of the enslavers is pragmatic for some type of mental anchoring in the absence of a better option.

>>15781150
If I were an American black, a descendent of slaves with no knowledge of where in Africa I came from, I'd still consider following any African religion to be an improvement over worshipping the god of the people who enslaved me.

>>15781227
they were already slaves when they brought them so the religion of their slavers is actually their own indigenous ones, in fact, islam still enslaves them to this day. christianity is 100 times kinder to them than anyone else and slavery was ended by christian morality.

>>15779609
>If every human comes from two ancestors in africa

Think about how absurd this is.

>>15780369

Entirely different gene for the hair.

>>15780577

>Can you go into "negative effects on brain development" a bit further?

The gene with the intron is HERC2 which affects the eye pigment ... when the whole gene is kaputt the development of the brain is quite negatively affected.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8086253/

>>15781550
>slavery was ended by christian morality
Christian nations just exported slavery to the third world along with their manufacturing. The vast majority of the products your "christian" nation imports were made by slave labor. You didn't end anything, you just swept it under the rug so that you could continue to profit from it while maintaining a facade of moral superiority.

>>15779609
WHGs were bottlenecked as fuck and also I guess people found them attractive.

>>15779636
>If society begins to find the recessive phenotype sexually attractive and it isn't an undue burden on one's fitness, then it spreads even faster.
Stuff like artificial insemination and sperm donors are also increasing this. Since blue eyed sperm donors are most in demand globally the amount of blue eyed people as a percentage of the global population will keep on increasing.

>>15779690
His nigger son (who cursed to be nigger) ham

>>15782338
you're the type to blame politicians for killing civilians even though it was a soldier who pulled the trigger, right? who is ACTUALLY enslaving children? me? just because I bought a computer? or their parents that ACTUALLY sent them to the mines and the nigger who ACTUALLY owns the mine?

>>15784076
>who is ACTUALLY enslaving children? me? just because I bought a computer? or their parents that ACTUALLY sent them to the mines and the nigger who ACTUALLY owns the mine?
You buying a computer creates the market demand for the slave labor that produced it. This is exactly the same as saying that you're not doing anything wrong by downloading child porn because you're not ACTUALLY raping children. By consuming it you are creating a demand that is then filled.

>you're the type to blame politicians for killing civilians even though it was a soldier who pulled the trigger, right?
Other way around, son. Without the soldiers enabling it, politicians are powerless. They couldn't exist without the soldiers supporting them, just like the slave masters couldn't exist without you supporting them by buying the products of slave labor.

It's fine if you want to cope or if you just don't care and refuse to give up your phone even if it means that child slaves have to die for it but you're beyond retarded if you're trying to claim that you're not directly enabling evil by giving money to evil people. Also, calling literally anyone who disagrees with you a jew is pure npc behavior, you retarded nigger.

>>15784242
>You buying a computer creates the market demand for the slave labor that produced it.
Non sequitor. Nothing about me creating demand causes the slave labour. the slave labour is caused by the people who actually caused it. Are you implying that me demanding computers entices and beguiles poor third-worlders who don't know any better into sin? I'm not the devil. I'm not stopping them from obtaining it ethically. I'm not stopping them from defending their own rights from their own slavers themselves. They cause their own suffering and pay the price of their sins instantenously, everyday, just like everyone else. Proof me creating demand is not evil? I never paid the consequences for it.
>calling literally anyone who disagrees with you a jew is pure npc behavior, you retarded nigger
literally calm down, it's literally just a meme you literal jew

>>15779609
They had a ton of children
Maybe the male was considered a demi-God just like whites were considered divine beings by spear chucking caribbeans

>>15784413
> Are you implying that me demanding computers entices and beguiles poor third-worlders who don't know any better into sin?
Anon is saying you are both morally compromised but in different ways.

>>15780150
>And in case you're curious, green eyes are directly descendant from angels.
Wrong. Green eyes are a mixture of blue and brown, i.e., human and demon.

>>15784432
He would have had brown eyes, though. Blue eyes would have started popping up only a few generations after him.

>>15779609
Your premise is incorrect.