Phylogenetics

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Category archives for Phylogenetics

Phylogeny Friday – 03 November 2006

When Phylogeny Friday last made an appearance on this blog, we were exploring the vertebrates. This was part of a larger series in which we were working our way through the eukaryotes, focusing on animals. I’ve come to realize that weekly phylogenies are too much, so we’re scaling Phylogeny Friday back to appear on the…

Phylogeny Friday – 22 September 2006

We’ve been working our way across through the tree of life in the past few editions of Phylogeny Friday. Last week we took a look at the evolutionary relationships of the animals, and we realized that many of the branching orders are extremely difficult to resolve. Today we’re going to zoom in on one of…

Phylogeny Friday – 15 September 2006

A few weeks ago I introduced the tree of life, albeit to some criticisms. The following week I zoomed in on one branch of that tree, the eukaryotes. I pointed out that animals were a mere twig in the eukaryotic tree, yet they have been the focus of a large amount of biological research. This…

The Eisen Brothers are Rockin’ the Genome

And they’re doing it open access style. Jonathan Eisen and Michael Eisen have each published papers in the PLoS journals using newly available genome sequence data. Jonathan is lead on author on the paper describing the genome sequence of the ciliate, Tetrahymena thermophila. He has blogged about the publication here and provides a wrap-up of…

Phylogeny Friday – 25 August 2006

Last week’s Phylogeny Friday introduced the three domains of life: bacteria, archaea, and eukaryotes. The bacteria and archaea are commonly referred to as prokaryotes, although that creates a paraphyletic taxon. Today, we will focus on the eukaryotes (organisms with nuclei and organelles). This taxon contains plants, animals, fungi, and a bunch of other lineage with…

Phylogeny Friday – 18 August 2006

Phylogeny Friday is back, bitches! Katherine’s gotta add me to her list ASAP. In the glorious return of PhyFridays, I give you the root of the tree of life. In the upcoming editions we’ll zoom in on a few parts of the tree to illustrate the diversity of certain taxa of interest. It’ll be kind…

Phylogeny Friday – 9 June 2006

You may have thought that Orin Scrivello was the worst dentist ever. Well, have I got a story for you. This dentist isn’t a sadist, and his follies were far from intentional. But the implications of his conduct greatly affected the lives of at least five of his patients. This week’s Phylogeny Friday is story…

Phylogeny Friday – 2 June 2006

I wrote about the possibility of gene trees and species trees giving conflicting information in a previous Phylogeny Friday. In that example, the discordance was due to balancing selection maintaining multiple alleles across species boundaries. But can incongruities between genetic data and species history arise via entirely neutral processes? The answer is implied in the…

Phylogeny Friday – 19 May 2006

As I mentioned previously, I’m busy preparing some data for a meeting next week. I don’t have much time to devote to Phylogeny Friday, so I’ll be sharing some of my own data with you. This data is nothing special; it just happens to be the data I finished analyzing a few minutes ago. It’s…

Phylogeny Friday – 12 May 2006

I’ve been busy this past week (and I’ll be busy in the next couple of weeks to come), so I don’t have much time to post to evolgen. For this reason this week’s Phylogeny Friday is a recycled post from the old site. Check out the comments on the original entry for some remarks from…