linkfest – 07/01/13

a day late and (*hbd chick checks her wallet*) … yes, a dollar short!

World’s Oldest Genome Sequenced From 700,000-Year-Old Horse DNA – cool!

Bad Health at the Origins of Agriculture – from henry harpending! see also andrew badenoch from evolvify.

DNA Evidence for Strong Genome-Wide Pleiotropy of Cognitive and Learning Abilities“Genetic correlations were greater than 0.70 between general cognitive ability and language, reading, and mathematics, results that were highly similar to twin study estimates of genetic correlations. These results indicate that genes related to diverse neurocognitive processes have general rather than specific effects.” – via jayman!

Insulin differs between ethnicities, study finds“People have differing abilities to release and react to insulin depending on ethnicity, according to a new study from researchers at Lund University in Sweden, Stanford University and Kitasato University.” – see also previous linkfest.

I Don’t Feel Your Pain“A recent study shows that people, including medical personnel, assume black people feel less pain than white people…. In each experiment, the researchers found that white participants, black participants, and nurses and nursing students assumed that blacks felt less pain than whites.”original research article.

Studying Tumors Differently, in Hopes of Outsmarting Them“[C]ancer: It is an evolutionary disease.”

Accelerating adaptive evolution in humans“In my last post, I noted R.A. Fisher’s argument that a larger population leads to more mutations and greater potential for adaptive evolution. As human populations have undergone massive growth over recent tens of thousands of years, we would expect the evidence of this population growth to show in our genomes. In this post, I point to a couple of papers that look at this evidence.” – from jason collins.

Three-Parent IVF Set to Go Ahead in Britain

Complete mtDNA from Filipino groups – @dienekes’.

Still missing the point – more good stuff from peter frost on stephen jay gould.

The Search for Western Tribalism“Tribalism as clannishness light.” – from staffan!

How Long Can You Wait to Have a Baby?“[M]illions of women are being told when to get pregnant based on statistics from a time before electricity, antibiotics, or fertility treatment. Most people assume these numbers are based on large, well-conducted studies of modern women, but they are not.”

Grandparents effect spotted in British class system“Children’s eventual position in Britain’s class system is closely linked to that of their grandparents, not just their parents, academics say. And where parents have ‘dropped down’ the socio-economic ladder, the so-called ‘grandparents effect’ often pulls them back up, research suggests…. [A]mong men with both parents and grandparents in the highest socio-economic group, 80% stayed in those positions when they were adults. But among men whose parents had been upwardly mobile, only 61% stayed in the group they had been born in to.” – don’t they mean the “regression to the mean effect’? – via jason collins.

Study: People With a Lot of Self-Control Are Happier“Improbably enough, people who are better able to resist impulses report being more satisfied with their lives.”

Clues in the Cycle of Suicide“Every year, suicide peaks with the tulips and lilacs — increasing roughly 15 percent over the annual average to create one of psychiatry’s most consistent epidemiological patterns. It may seem perverse that the period of spring and early summer … should contain ‘a capacity for self-murder that winter less often has.’ Yet it does.”

A Test to Measure How Rational You Really Are – dysrationalia!

Does life have a purpose?“Nobody expects atoms and molecules to have purposes, so why do we still think of living things in this way?”

Study appears to overturn prevailing view of how the brain is wired

Sardinian family’s tip for a long life: minestrone – and good longevity genes! (~_^) – “Luca Deiana, a professor of clinical biochemistry at the university of Sassari in Sardinia, who has studied some 2500 centenarians on the island since 1996, was quoted by Corriere della Sera at the time as saying the longevity of local inhabitants was influenced by genetics along with environmental, nutritional and lifestyle habits.”

Chilean Mummies Reveal Ancient Nicotine Habit“The hair of mummies from the town of San Pedro de Atacama in Chile reveals the people in the region had a nicotine habit spanning from at least 100 B.C. to A.D. 1450.”

Mysterious Pair Buried With Flowers — Oldest Example Yet“The pair — an adult male and an adolescent of undetermined sex — belonged to the primitive Natufian culture, which flourished between 15,000 and 11,600 years ago in an area that is now Israel, Jordan, Lebanon, and Syria.”

bonus: Judge jails depraved sex gang for 95 years after they committed grotesque abuse on girls as young as 11 – good!

bonus bonus: Foreign reporter raped in Tahrir Square – again. see also Arab Spring Unleashes Illiberal Repressive Masses from parapundit.

bonus bonus bonus: The Divided States of America, in 25 Charts“As America approaches its 237th birthday, it’s feeling quite a bit more ‘pluribus’ than ‘unum’…” – gee, i wonder why?

bonus bonus bonus bonus: First Pictures: Peru’s Rare, Unlooted Royal Tomb

bonus bonus bonus bonus bonus: India: If you have casual sex, you are legally married – ruh roh.

bonus bonus bonus bonus bonus bonus: Take the Impossible “Literacy” Test Louisiana Gave Black Voters in the 1960s – it’s not impossible, but it’s not easy either. esp. given that not all of the questions are worded very clearly. =/

bonus bonus bonus bonus bonus bonus bonus: The scientific feud that ended in an execution

bonus bonus bonus bonus bonus bonus bonus bonus: Leeches from the Underworld Don’t Want Your Blood

bonus bonus bonus bonus bonus bonus bonus bonus bonus: Awesome astronomical board game from 1804

(note: comments do not require an email. the tapir’s PREHENSILE penis! good lord.)

32 Comments

  1. “don’t they mean the “regression to the mean effect’?”

    No. They mean the “Transgenerational epigenetics effect”

    Reply

  2. “Nobody expects atoms and molecules to have purposes, so why do we still think of living things in this way?”

    Read/Watch some Lee Smolin…

    Reply

  3. “it’s not impossible, but it’s not easy either. esp. given that not all of the questions are worded very clearly. =/”

    You’re being far too rational for the HBD crowd. Try something like “it’s not impossible, those derpy black folk just don’t know nuthin’! I’m so mad at them, and now I have biology to back me up!” Because science is fundamentally restricted to whatever our present means of acquiring repeatable testable information happens to be (e.g. sequencing DNA — let’s just ignore all those epigenetic confounds. Recent environmental exposures for ancestral populations couldn’t possibly affect their extant descendants because otherwise GWAS would all be questionable, and then now where would we be?!?)”

    Reply

  4. @roxley aka voortham aka goldrudder aka stavenger aka i want a prehensile penis – NO SOCK PUPPETRY!

    you are banned. don’t come back now … here?

    Reply

  5. It’s funny. Ethnic differences in the pancreas is ok, but in the brain – unthinkable. They used to say the Earth is flat. This is the contemporary version of that.

    Reply

  6. re: Bad Health at the Origins of Agriculture

    FWIS I’ll just past the comment I made over there:

    “Not sure if this is to the point, but I’ve long assumed that people took to agriculture out of necessity, not choice — that population pressure and the competition for good hunting and gathering grounds forced the weakest tribes to the margins, where feeding on wild grasses began out of semi-desperation to supplement an otherwise inadequate diet of game, fruit, nuts, roots, berries, etc. Just think how much work it is to change wheat seeds to bread. This might help account for nutritional deficiencies in early horticultural societies, if indeed that is what the evidence shows.”

    Reply

  7. @Luke

    It could have been like that but i’m more inclined to the opposite view i.e. particular spots where there was an abundance of wild gathered food and these spots became special to the H-G group that controlled them and therefore subsequently morphed into a religious site with a priesthood who eventually start to manage the resource.

    I think Jericho is a good candidate for what i mean

    http://en.wikipedia.org/wiki/Jericho

    “It is believed to be one of the oldest inhabited cities in the world.”

    “Jericho is described in the Old Testament as the “City of Palm Trees.” (Dates)

    “Copious springs in and around the city”

    “the city was an early centre of worship for lunar deities”

    I think it’s easy to imagine a spot with plenty of water and an emergency food supply becoming a religious site for the local H-G tribe.

    Reply

  8. “It may seem perverse that the period of spring and early summer … should contain ‘a capacity for self-murder that winter less often has.’ Yet it does.””

    My theory on this is people who get down during winter are too down to actually do it. When spring comes they start to get out of it *but* there’s a transition point where they’re better enough to be physically capable of motivating themselves to do it and still down enough to want to.

    So the critical point isn’t when they’re 100% down but when they’re coming out of it and are 3/4 down and 1/4 better.

    Reply

  9. Africans tend to have lower insulin sensitivity. … compensate for this by releasing larger quantities of insulin.

    East Asian … have very good insulin sensitivity, … have a poorer ability to release more insulin if it is needed.

    Can insulin production and insulin sensitivity be inherited separately? You could get high sensitivity and and high production.

    Reply

  10. tip for a long life: minestrone

    For hundreds of years families in Ovodda have lived in relative isolation from the rest of the world, marrying into each others’ families.

    Reply

  11. Take the Impossible “Literacy” Test

    Literacy tests are counter to the spirit of democracy. There should be pictures of the candidates on the ballots instead of their names.

    Reply

  12. Can insulin production and insulin sensitivity be inherited separately? You could get high sensitivity and and high production.

    Doesn’t seem like there is any reason why not, unless the alleles at the locii implicated in one phenotype have other alleles giving rise to the other phenotype.

    African and Asian mixes seem like they’d have a similar condition to Europeans some suspectability to both conditions (somewhat insulin resistant, somewhat hypoinsulinaemic) but some F2s would have both rather resistant and rather hypoinsulinaemic, while some would produce sufficient or high levels of insulin and not be insulin resistant (I don’t know if this would cause problems of its own though, in the form of an “overly lean” phenotype).

    In the earlier comment thread on this when hbdchick called this up I thought it might help explain patterns in obesity – as insulin resistance, the African condition, seems to have more of an association with obesity than hypoinsulinaemia, the Asian condition, mirroring racial differences in within country obesity – but after thinking some more that probably wouldn’t pan out, if folks with Amerind ancestry show the Asian pattern (or a more extreme variant thereof) net of European and African admixture.

    Reply

  13. don’t they mean the “regression to the mean effect’?

    Heh, although not (though this is basically already implied by you, but maybe to clarify for some readers of the comment thread) because people regress to their grandparents phenotype more than their parents, but because if the grandparents show the same phenotype as the parents, its more likely more due to good or bad genetic luck (which gets passed on from parents to kids) and less likely due to environmental luck (which doesn’t).

    Reply

  14. “@roxley aka voortham aka goldrudder aka stavenger aka i want a prehensile penis – NO SOCK PUPPETRY!

    you are banned. don’t come back now … here?”

    Now that’s rather harsh, don’t you think? I mean, we were all 10-year-olds once, and probably given to similarly childish mischief as our friend with may names, so are we really any better?

    Reply

  15. @georgia resident – “Now that’s rather harsh, don’t you think?”

    my blog, my rules.

    (i’m pretty sure that this is the same person who did this a couple of times before, and i asked them nicely then to stop, but they obviously refuse. if someone wants to act sophomoric — or just moronic — on the internet, they can head over to 4chan or half-a-million other sites. if it wasn’t the same person as before … well, sorry, life can be hard sometimes.)

    the reason i don’t like sock puppetry is because other commenters here are not going to know with whom they’re discussing. I can (sorta) see who everyone is, ’cause i can see everyone’s ips — but you guys out there can’t (unless you’re all a bunch of wizard-hackers!).

    Reply

  16. “Grandparents effect spotted in British class system”

    Yes, there is a regression to the mean effect for each class level. The article doesn’t cite any heritable cause though. Ian Deary is more to the point on contributing causes of social mobility at 25:20 here:

    Reply

  17. @matt – “…but because if the grandparents show the same phenotype as the parents, its more likely more due to good or bad genetic luck (which gets passed on from parents to kids) and less likely due to environmental luck (which doesn’t).”

    yes! that’s the point. thanks! (^_^)

    Reply

  18. @sNoOOPy – “For hundreds of years families in Ovodda have lived in relative isolation from the rest of the world, marrying into each others’ families.”

    yes, the interior of sardinia has seen a LOT of close marriages. so the members of this family are really like a bunch of thoroughbreds! bred for longevity. (~_^)

    Reply

  19. @grey (and @luke) – “It could have been like that but i’m more inclined to the opposite view i.e. particular spots where there was an abundance of wild gathered food and these spots became special to the H-G group that controlled them and therefore subsequently morphed into a religious site with a priesthood who eventually start to manage the resource.”

    figs! (^_^)

    Reply

  20. @staffan – “It’s funny. Ethnic differences in the pancreas is ok, but in the brain – unthinkable.”

    yes, well, human evolution stops at the neck, didn’t you know? (~_^)

    Reply

  21. “figs”

    Quite so :)

    (and possibly dates as well)

    (it makes me wonder if Gobekli had anything like that?)

    Reply

  22. @an egyptian ballot.

    I always pick the scotty dog, but they don’t have it. So I’ll vote umbrella.

    Reply

  23. “it makes me wonder if Gobekli had anything like that?”

    Apples?

    http://en.wikipedia.org/wiki/Apple

    “The center of diversity of the genus Malus is in eastern Turkey.”

    “About 69 million tonnes of apples were grown worldwide in 2010, and China produced almost half of this total. The United States is the second-leading producer, with more than 6% of world production. Turkey is third…”

    or may wild wheat?

    https://en.wikipedia.org/wiki/G%C3%B6bekli_Tepe

    “Recent DNA analysis of modern domesticated wheat compared with wild wheat has shown that its DNA is closest in sequence to wild wheat found on Mount Karaca Dağ 20 miles (32 km) away from the site, suggesting that this is where modern wheat was first domesticated.”

    Reply

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