tag:blogger.com,1999:blog-3734925856292601239.post1261505963575972654..comments2024-03-22T15:55:34.030-04:00Comments on Evo and Proud: It's not self-hatePeter Frosthttp://www.blogger.com/profile/04303172060029254340noreply@blogger.comBlogger23125tag:blogger.com,1999:blog-3734925856292601239.post-27535400234239740352018-07-20T15:41:11.450-04:002018-07-20T15:41:11.450-04:00@Anonymous, that public release fails to link to a...@Anonymous, that public release fails to link to a paper. The wording is a bit ambiguous and I suspect whoever wrote it didn't properly understand the implications: f.e. 'one of the light pigmentation variants near the SCL24A5 gene locus was introduced into East Africa by gene flow from non-Africans'... does this refer to Sandawe and are they saying South African Bushmen were once black? Before the non-African variant reached SS Africa from outside?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-76332610241525237772018-07-20T13:14:16.117-04:002018-07-20T13:14:16.117-04:00@ Anonymous, July 17, 2018 at 6:15:00
'varia...@ Anonymous, July 17, 2018 at 6:15:00 <br /><br />'variants associated with dark pigmentation in Africans were identical by descent in southern Asian and Australo-Melanesian populations.'<br />https://www.eurekalert.org/pub_releases/2017-10/aaft-auo101017.phpAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-50422072860195697952018-07-19T15:12:29.939-04:002018-07-19T15:12:29.939-04:00I never contrasted long hair and shaved hair witho...I never contrasted long hair and shaved hair without reference to the crucial factor of MPB. I think it is a matter of common obsevation that few men with MPB grow what is left of their hair long, and conversely few men with no trace of MPB shave their head. A man's hair looks good to everyone if it is thick and dense, it may look even better to women if, in addition to being thick and dense, it is grown long, but MPB kills your chance of having great hair and you look stupid with MPB and the remaining hair grown long--that just emphasizes the bald patch. If someone has MPB and wants to make it less obvious, he cuts his hair very short or even shaves it all off. A shaved head is uniform in appearance, with no bald patches, and so a shaved head is actually as close to the impact of thick dense hair as one can come once afflicted with MPB. So those, especially younger men, with MPB, who are particularly concerned with looking like they are physically capable, (eg balding bouncers), often shave their heads. Baldness is a marker for declining health: <a href="https://www.bbc.co.uk/news/health-42164898" rel="nofollow">Early baldness higher heart disease risk factor than obesity, says study</a>. Seannoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-44638059654334248312018-07-17T18:15:02.773-04:002018-07-17T18:15:02.773-04:00@Sean, lots of male sex symbols and role models, a...@Sean, lots of male sex symbols and role models, as Wanda and I have pointed out, are long haired and proud of it. There is undoubtedly sex selection for long hair in women: perhaps hair length in men isn't under positive selection at all?<br /><br />I'm unsure about skin colour because it doesn't match the obvious solutions as much as you'd think. I'm 100% certain the LCA of H. saps was not black because 1) the Sandawe aren't black and 2) Australian Aboriginal skin doesn't have quite the same pigmentation as African skin.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-62912281870807464072018-07-17T13:37:30.000-04:002018-07-17T13:37:30.000-04:00You are mixing up long hair and thick hair. A thic...You are mixing up long hair and thick hair. A thick head of hair makes you look assertive and is attractive to women, going by actors and models, but in real life if you are noticeably bald you get your remaining hair cut very short or maybe shave it all off if looking assertive is important to you. If long hair was super attractive, and baldness was a marker for superior disease resistance, then accentuating your bald areas by leaving a noticeable fringe of long hair around a bald pate would be a highly popular strategy. <a href="https://www.youtube.com/watch?v=MvAISFufHek" rel="nofollow">It isn't</a>, for reasons which ought to be obvious. Gregory Cochran and Razib Khan used to pretend they thought white skin was to do with disease resistance, it's ye olde HBD all purpose hand waving explanation.Seannoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-23255055044010375192018-07-17T04:44:53.321-04:002018-07-17T04:44:53.321-04:00@Sean, its just disease resistance (and not necces...@Sean, its just disease resistance (and not neccessarily STIs) explains a lot of pleiotropic effects. It is undooubted that long hair is attractive in women, but it is also attractive in men as Wanda noted fe. long haired rock stars. Furthermore many cultures have religious taboo bout cutting mens hair because hair is thought to be virile - Samson being the best known example. This is the same ind of taboo surrounds facial hair fe. Norse and Kurdish taboos against cutting facial hair. My thoughts are more why the situation had reversed perhaps a few times in the Old World tropics and at the very least once.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-59314172565550330132018-07-16T19:28:07.168-04:002018-07-16T19:28:07.168-04:00Wanda, Curly of the three Stooges and Vince McKay ...Wanda, Curly of the three Stooges and Vince McKay of the cop show the Shield were portrayed by the same naturally balding and chubby actor, but he lost weight gained muscle and became an intimidating shaved-bald to play MacKay. Shaving one's head is like lifting weights and wearing shades. look at Jeff Bezos before and after, he is making the best of a bad job.<br /><br />Anony, Well being bald could stop one catching a sexually transmitted disease, but why only for men? Sexual selection can work on women or on men. Not both. If hair is under sexual selection, and only men get bald, something that is not an advantage in attracting women, then MPB is most likely a side effect of sexual selection of women's hair.Seannoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-37441494593679393172018-07-16T04:18:09.530-04:002018-07-16T04:18:09.530-04:00@Wanda, it might be a UK thing because of skinhead...@Wanda, it might be a UK thing because of skinhead culture in the past. The look was only popularised in the UK because of a popular TV show called EastEnders and the Grants were seen as ideal hard men who the public wished to emulate.<br /><br />MPB is a mystery because its existence overrides sexual selection, much as short and frizzy hair has done in some places outside of Africa. Although sexual selection has created some impressive structures in nature it seems to me its benefits can be easily overridden. But that still leaves the question of to what benefit. I always suspect disease resistance as the default explanation but who knows?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-33633056282315272632018-07-15T22:26:36.887-04:002018-07-15T22:26:36.887-04:00@Aonymous
I dunno. I've never found baldies i...@Aonymous<br />I dunno. I've never found baldies intimidating. To me, actor Wallace Shawn typifies the chrome dome --a hapless worker bee: Homer Simpson is bald; Conan the Barbarian, He-Man and Tarzan are not. (^_^)Wandahttps://www.blogger.com/profile/09112923932070896374noreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-41594269596972817062018-07-15T17:50:32.616-04:002018-07-15T17:50:32.616-04:00@Anonymous, I'm not sure which gene is respons...@Anonymous, I'm not sure which gene is responsible in the monkeys but Joseph Deniker explicitly compared their hair texture to Africans as a matter of fact. However I met and cared for woolly monkeys lately and though the hair is unusual it isn't exactly frizzled when you look close. (They're very nice natured so its easy to look at them close while they hug and groom you.) Atelines canonically lack underfur however the ADW says "The hair is dense, short, thick, and predominantly composed of underfur" - which is probably a mistake based on the curiousness of the texture.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-81768302945670198262018-07-15T14:08:52.999-04:002018-07-15T14:08:52.999-04:00@ Anonymous July 15, 2018 at 6:10:00 AM EDT
Have ...@ Anonymous July 15, 2018 at 6:10:00 AM EDT<br /><br />Have you ever wonder if the same genes are responsible for curly hair in Blacks and woolley monkyes(Lagothrix lagotricha)?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-37983337706401268002018-07-15T06:47:09.772-04:002018-07-15T06:47:09.772-04:00@Wanda, people often find the skinhead look intimi...@Wanda, people often find the skinhead look intimidating, so genetic pacification would select against it whatever its origin is.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-12632639070610459272018-07-15T06:10:43.706-04:002018-07-15T06:10:43.706-04:00@J, woolly hair gene expression is sporadic in oth...@J, woolly hair gene expression is sporadic in other animals, mostly under domestication. For example in Bridlington terriers and wool producing sheep. The appearance of such hair sporadically in lab rodents was of interest to geneticists at the time. Only its distribution within man has puzzled anthropology re: hypotheses connecting Melanesian and 'Negrito' populations to Africa more closely than nearby (supposedly Caucasoid!!) Australians, as though the one trait of hair texture out-weighed the similarities shared by Melanesian and Australian crania. Since only one or two genes were involved its no big deal.<br /><br />I think a better question is why 'unsexy' frizzy hair came under enough positive selection in some humans that it won out against the selection toward 'sexy' long hair.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-47448376888666277102018-07-14T11:58:58.136-04:002018-07-14T11:58:58.136-04:00I wonder from where we got that Harpo Marx style h...I wonder from where we got that Harpo Marx style hair among Ashkenazim. <br /><br />BTW, St.Paul was no poet. Jhttps://www.blogger.com/profile/05676167615981895061noreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-85036639073354185242018-07-14T11:38:04.260-04:002018-07-14T11:38:04.260-04:00@Jcrezyyy977
Nope.
They belong to brittle-hair sp...@Jcrezyyy977<br /><br />Nope.<br />They belong to brittle-hair species. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-28497859240189699952018-07-14T05:56:33.767-04:002018-07-14T05:56:33.767-04:00Can I ask if you disagree with what's now the ...Can I ask if you disagree with what's now the concensus molecular tree? Because what you're saying makes more sense if Melanesians and Negritos diverged from the Eurasian mainline before Euros and Asians split.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-68334009487085033362018-07-13T10:35:36.725-04:002018-07-13T10:35:36.725-04:00You know despite the epidemic of sistahs wearing w...You know despite the epidemic of sistahs wearing weaves, black women can actually grow long hair NATURALLY-if it's braided or corn-rowed :). Jcrezyyy977noreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-72886898333928047472018-07-12T17:46:39.506-04:002018-07-12T17:46:39.506-04:00I once toyed with the idea that MPB evolved as a m...I once toyed with the idea that MPB evolved as a means to deter older men from abandoning their wives and re-entering the mate market. If that were the case, however, it would be less common in societies where older men are normally polygynous. <br /><br />Well, back to the drawing board.Peter Frosthttps://www.blogger.com/profile/04303172060029254340noreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-57409566463980762022018-07-12T14:38:24.409-04:002018-07-12T14:38:24.409-04:00ISTM that MPB would be selected against because, a...ISTM that MPB would be selected against because, anecdotally at least, women prefer men with a good head of hair -- that's why men do comb-overs, wear wigs, and have traditionally thrown away money on quack baldness cures. <br />The shaved-head as a super macho look seems to be a fairly recent fad. Thus so many derogatory names for chrome domes, skullets, cue balls, slapheads, turtle waxers, etc.Wandahttps://www.blogger.com/profile/09112923932070896374noreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-15509359899323071332018-07-12T03:06:54.794-04:002018-07-12T03:06:54.794-04:00I would assume if hair is sexually dimorphic, and ...I would assume if hair is sexually dimorphic, and it absolutely is, MPB is a side effect of a normal androgen mediated process to make the hair thinner , so creating a more masculine and intimidating appearance. <br /><br />THat some men become bald is a side effect of androgens inhibiting hair growth/reducing follicles to promote an older more masculine appearance that might be an advantage in conflicts or general social success.<br /><br />Sort of how the reverse is true in women, pregnancy with high levels of female hormones the hair becomes very thick (exaggerated hormone state) and then there is shedding of hair after childbirth because of withdrawal.ItsTheWooohttps://www.blogger.com/profile/12057537399918684119noreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-1161893093411856382018-07-11T13:00:58.283-04:002018-07-11T13:00:58.283-04:00Isn't MPB tied to testosterone?
This article...Isn't MPB tied to testosterone? <br /><br />This article claims MPB is most common among Europeans, although the map in the article suggests that MPB is more common among Mediterranean populations, that is Southern Europeans, Middle Easterners, and North Africans, than among Northern Europeans:<br /><br />https://www.express.co.uk/life-style/life/762227/hair-loss-bald-men-country<br /><br />MPB prevalence appears to correlate with male androgenic hair i.e. male body hair prevalence, which is produced by testosterone:<br /><br />https://upload.wikimedia.org/wikipedia/commons/f/f3/Bodyhair_map_according_to_American_Journal_of_Physical_Anthropology_and_other_sources.jpg<br /><br />Drugs like steroids cause male hair loss as a side effect, and drugs used to treat MPB like finasteride disrupt testosterone. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-50875804928792761352018-07-11T09:45:09.589-04:002018-07-11T09:45:09.589-04:00Because MPB is commonest in Europeans, I suppose i...Because MPB is commonest in Europeans, I suppose it is a side effect of selection for women having abundant hair or looking good in other ways. Seannoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-44878207914837342502018-07-11T00:41:11.573-04:002018-07-11T00:41:11.573-04:00Peter, what is your view on male pattern baldness?...Peter, what is your view on male pattern baldness? Do you suppose there is some evolutionary reason for it?Anonymousnoreply@blogger.com