speciation

Karl Giberson and Francis Collins explain how Canadians can become a separate species

In The Language of Science and Faith, (IVP Books, 2011) explaining how microevolution can become macroevolution, they explain, If a population of some species undergoes a substantial number of such changes [genetic mutations], it can eventually turn into a new species, a process called speciation. Usually speciation requires that the population be geographically isolated from […]

speciation

How many species are there, really?

In “Rewriting the textbooks: Noah’s shrinking ark” (part of a series on stuff in the textbooks that could use an airbrush), Kate Douglas (New Scientist, 23 May 2011) tackles the tangled problem of species, supposedly standing at 30 million, which she describes as “almost certainly a huge overestimate.” So not much is systematic apart from […]

speciation

Awesome powers of common shrew or weakening powers of current classification?

This New Scientist article (Michael Marshall, 28 April 2011)  on the interbreeding of shrews despite the fact that their chromosomes have been rearranged does not use  the “biological species concept”  (it’s hard to know how to do so under the circumstances). Stuck for a term, Marshall calls the differently arranged groups “races” instead. Anyway, Searle […]

speciation Uncommon Descent Contest

Uncommon Descent Contest Question 21 reposted What if Darwin’s theory only works 6 percent of the time?

(Note: There was a problem posting entry comments to the original post, so I am reposting this – I think, very interesting – question to give others a chance. I have posted a link from the previous post to this one for purposes of entry. All previous entries will be judged, so no need to […]

speciation Uncommon Descent Contest

Uncommon Descent Contest Question 21: What if Darwin’s theory only works 6 percent of the time?

(Note: There was a problem posting entry comments here, so this contest has been reposted: Go here to enter. All previous entries will be judged, so no need to repost.) Here’s an interesting article in New Scientist by Bob Holmes on a new approach to how animals become separate species (“Accidental origins: Where species come […]

speciation

Speciation: It’s all in how you play the tune?

British physicist David Tyler discusses the recent claims for the possibility of new species of finch developing on the famous Galapagos Islands – a possibility because the authors don’t think they are there yet, and they may never be. Tyler explains, An ecological theory of speciation but no support for Darwinism The Galapagos Islands have […]

speciation

Speciation: Or maybe not?

At Wired Science, we are informed “Birth of New Species Witnessed by Scientists” (November 16, 2009): On one of the Galapagos islands whose finches shaped the theories of a young Charles Darwin, biologists have witnessed that elusive moment when a single species splits in two. In many ways, the split followed predictable patterns, requiring a […]