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My name is Greg Laden. You can find out about me here, contact me here, and for all the gory details, have a look at this...

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Sex Differences:

The Evolution of Imprinting

The phrase "genomic imprinting" has come to refer the turning off of a gene (a particular instance of a gene on a particular chromosome duplicated across the cells in a body) so that the gene is not expressed at all, with the turning off of...

Sex Ratio Bias in India

Sometimes boys are worth more, sometimes girls are worth more. In an evolutionary sense. Or, more correctly, the value of a certain sex ... as an offspring ... can be measured in fitness terms. Fisher noted this and hypothesized this was the explanation for the...

Female Coders Do It With Consideration

Check it out: Emma McGrattan, the senior vice-president of engineering for computer-database company Ingres-and one of Silicon Valley's highest-ranking female programmers-insists that men and women write code differently. Women are more touchy-feely and considerate of those who will use the code later, she says. They'll...

The Phalarope: Not just another polyandrous bird...

MIT researchers found that phalaropes depend on a surface interaction known as contact angle hysteresis to propel drops of water containing prey upward to their throats. Photo by Robert Lewis The Phalarope starts out as an interesting bird because of its "reversed" sex-role mating...

Crazy Anthropologist Links Food, Sex

Can you believe this guy? Check it out: The French anthropologist Claude Levi-Strauss once proposed that humanity began with cooking. [a Twin Cities anthropologist] says love may have begun with cooking, as well. ... The earliest human ancestors, some kind of chimp-like apes, were living...

Proof that Noah's Ark was Real

One of the most compelling argument that the story of Noah's Ark is made up is the implausibility of having animals like tigers and lions together with animals like lambs and deer on the same boat for very long. The big carnivores would eventually eat...

Good news: The Second Coming has Arrived!!

Bad News: It's a Big Lizard!! According to a report noted in Evolving in Kansas, Komodo Dragons have been hatched in Sedgwick County without fertilization by a male. There are two of them, both males. (Isn't that interesting?) ... I think they should name them...

The Modes of Natural Selection

There many ways of dividing up and categorizing Natural Selection. For example, there are the Natural Selection, Sexual Selection and Artificial Selection, and then there is the Modes of Selection (Stabilizing, Directional, and Disruptive) trichotomy. We sense that these are good because they are "threes"...

The Buttocks is not an excretory organ

... but it might be a sexual organ... The Federal Communications Commission has proposed a $1.4 million fine against 52 ABC Television Network stations over a 2003 broadcast of cop drama NYPD Blue....The fine is for a scene where a boy surprises a woman as...

Chimpanzee Food Sharing

Is chimpanzee food sharing an example of food for sex? One of the most important transitions in human evolution may have been the incorporation of regular food sharing into the day to day ecology of our species or our ancestors. Although this has been recognized...

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