“For the price of $99 dollars and a small saliva sample, AncestryDNA customers get an analysis of their genetic ethnicity and a list of potential relatives identified by genetic matching. Ancestry.com, on the other hand, gets free ownership of your genetic information forever. Technically, Ancestry.com will own your DNA even after you’re dead.”
Want to know more? Read about it here.
After the migrant crisis from Syria hit Germany, it challenged the Willkommenskultur (Welcome culture). While most Germans swung into action to help settle the millions of refugees coming to Germany, some (self-proclaimed) neo-nazis were quoted as saying the German people faced “the destruction of our genetic heritage” and risked becoming “a gray mishmash”.
Well I have good/bad news for everyone. There is no unique German genetic heritage. There also isn’t a unique French genetic heritage, or Norwegian or Polish or Italian genetic heritage. All Europeans are already a mishmash of repeated ancient migrations. New studies show that almost all Europeans descend from three major migrations in the past 15,000 years including two from the Middle East.
Want to know more? Check it out over at Science.
Before 2016 ended John Hawks (Paleoanthropologist) asked the simple question on facebook:
“What questions in the science of human evolution have not received enough attention? Which ones should we be investigating in 2017?”
The answers will largely surprise you, and mostly revolved around trust. In the age of people doubting science and facts, these are important questions to be asking, and even more important for academics and scientists to be addressing.
Read the full article here.
Male orgasm is pretty easy to figure out. Without it, there is no insemination, so evolutionarily if you can’t get off you can’t make babies. Pretty straight forward.
The female orgasm however is more of a mystery. It is unclear why it occurs (and to some, unclear HOW it occurs).
So the recent research on the evolutionary origin of the female orgasm in The Journal of Experimental Zoology… earth shattering.
Read about the results over at the New York Times!
Signalling individual identity is critical in many aspects of human social interaction (click for video!).
We all rely on our ability to recognize other people’s faces to get along in the world. Most people don’t think too hard about this, it’s so fundamental to our existence. But it turns out that in order to stand out in the crowd, you need to be, well different. A recent study shows that human faces are in fact, much more different from one another than other traits, and suggests that this high facial diversity has evolved specifically to signal individual identity. It’s a pretty interesting story, and I look forward to digging into the details.
Check out this NatGeo piece on the work, and the original publication (paywalled).
Sheehan, Michael J., and Michael W. Nachman. “Morphological and population genomic evidence that human faces have evolved to signal individual identity.” Nature Communications 5 (2014).
In a pleasantly surprising turn of events, this week a take-down of some dubious evolutionary psychology was published by the popular media! The original article, a perspective piece published in Evolutionary Applications, claims that moodiness associated with PMS may have historically served an adaptive role by driving infertile couples apart.
Premenstrual syndrome (PMS) affects up to 80% of women, often leading to significant personal, social and economic costs. When apparently maladaptive states are widespread, they sometimes confer a hidden advantage, or did so in our evolutionary past. We suggest that PMS had a selective advantage because it increased the chance that infertile pair bonds would dissolve, thus improving the reproductive outcomes of women in such partnerships. We confirm predictions arising from the hypothesis: PMS has high heritability; gene variants associated with PMS can be identified; animosity exhibited during PMS is preferentially directed at current partners; and behaviours exhibited during PMS may increase the chance of finding a new partner. Under this view, the prevalence of PMS might result from genes and behaviours that are adaptive in some societies, but are potentially less appropriate in modern cultures. Understanding this evolutionary mismatch might help depathologize PMS, and suggests solutions, including the choice to use cycle-stopping contraception.
Check out the response, published by The Daily Beast, here:
Here’s the scapegoat unhappy spouses have been waiting for: According to a paper out last week by Michael R. Gillings, premenstrual syndrome (PMS) can ruin a marriage. Gillings claims that PMSing women—in infertile couples in particular—may use feelings of “animosity” as well as risk-seeking and competitive behaviors to leave their husbands and find someone new. I’m sorry to say, but the evidence in favor of this hypothesis is thinner than Always Infinity menstrual pads.