Evolutionary Biology

Category archives for Evolutionary Biology

Minnesota Atheists’ “Atheists Talk” radio show. Sunday, March 29, 2009, 9-10 a.m. Central Time “Remarkable Creatures: Our Guest Sean B. Carroll.” Have you heard of the new science of Evo Devo? If so, then you’ve probably read Endless Forms Most Beautiful by Dr. Sean B. Carroll. It is a captivating book describing the genetic tool…

Finches Determine Sex of Offspring

As you know if you read my blog, Trivers Willard is an important theoretical construct which has been tested numerous times. TW works in some species, not in others, and overall, that should be predictable (accroding to TW). It turns out that finches control the sex of their offspring, and do so in a way…

Why is there “junk DNA”? What is Junk DNA? What is a Pseudogene? What is Gene Duplication? Goodness, you certainly do have a lot of questions. And some of them can be answered, or at least addressed, on examination of a very interesting new paper recently published about a gene that became a useless “pseudogene”…

Dawkins…. On Purpose

Dawkins gave a talk that could be criticized as not particularly new, in that his main idea is that human brains are too powerful and adaptable to continue to function primarily within an adaptive program serving as a proper adaptive organ. Instead, human brains think up all sorts of other, rather non-Darwinian things to do.…

Perhaps we are all subject to falling into the trap of what I call the Hydraulic Theory of Everything. If you eat more you will be bigger, if you eat less you will be smaller. Emotional states are the continuously varying outcome of different levels of a set of hormones, forming “happy” or “stressy” or…

Topi or not Topi …

Go to any bar and you’ll see a lot of males standing and sitting around not mating. I’ll bet you would have guessed that the reason they are not mating is that no females will mate with them for one reason or another. But there is the distinct possibility that they are very inconspicuously resisting…

Why is there no Birth Control Pill for men? The answer I’d like to propose can be summed up in two closely linked words pilfered from the question itself:

Marta’s (good) questions, … continued

Why did the evolution of a large brain happen only once (among mammals, and in particular, primates?) Larger brains have evolved a number of times. It seems that there has been a trend over several tens of millions of years of evolution of larger brains in various clades, such as carnivores and primates. There is…

Date-a-Clade

From the people who brought you the Tree of LIfe: You can click on a node and get the info on the date of that node. Here.