All posts tagged with population genetics

ARG is the word

1 minute read

Adam Siepel has written a very useful explainer about a new preprint he has posted with Matthew Rasmussen on the arXiv preprint server: “Our Paper: Genome-wi...

Inbreeding impression

less than 1 minute read

I ran across an io9 article from 2011, “Why inbreeding really isnt as bad as you think it is”, which is topical for some of the genetics I’ll be teaching ove...

Tomoko Ohta profile

less than 1 minute read

Current Biology has published an interview of the esteemed Japanese population geneticist Tomoko Ohta Ohta:profile:2012.

Founder effect

4 minute read

A founder effect is caused by genetic drift in a small number of initial founders of a new population.

Kin selection strikes back

1 minute read

Last year I noted the publication of a paper in Nature by Martin Nowak, Corina Tarnita and Edward O. Wilson, which claimed that kin selection is not a suffic...

DNA relatives

less than 1 minute read

Steve Mount works through the math of “relative finder” predictions from 23andMe (and by extension, other personal genome tests): “Genetic genealogy and the ...

What is the human mutation rate?

17 minute read

Last spring I wrote about a study that used whole-genome comparisons between parents and offspring to estimate the rate of per-genome mutation in humans (“A ...

Inclusive fitness works

2 minute read

I can’t believe the amount of attention the paper by Martin Nowak, Corina Tarnita and Edward O. Wilson Nowak:eusociality:2010 has gotten. It was in last week...

Migration thinking

1 minute read

Murray Cox and Michael Hammer have a short commentary piece in the current BMC Biology, titled, “A question of scale: Human migrations writ large and small” ...

Time to revise the mtDNA timescale?

5 minute read

Krzysztof Cyran and Marek Kimmel (2010) have presented a revised set of estimates of the human mtDNA most recent common ancestor (MRCA). It’s an interesting...

Lag times of biological invasions

10 minute read

A biological invasion occurs when a species rapidly colonizes a new geographical area. The new area is often very far from the regions considered to be part ...

The Neandertal fraction

3 minute read

I’ve gotten the same question a few times, and have seen it elsewhere, so I thought it would be worth a short post to explain it. And for those readers who’v...

More X-Woman thoughts

3 minute read

I had a great session with my advanced students yesterday running through different evolutionary scenarios for the X-Woman. This and some later posts will fo...

An insertion into deep history

6 minute read

A couple of weeks ago I noted a new article by Chad Huff and colleagues in PNAS. It wasn’t available yet when I wrote, but I’ve had the chance to study it no...

R. A. Fisher's model of adaptation

10 minute read

Chapter 2 of R. A. Fisher’s Genetical Theory of Natural Selection is remarkable for many reasons. In it, he presents a model of selection in an age-structure...

Quote: Fisher on the limits of diffusion

less than 1 minute read

R. A. Fisher and Sewall Wright introduced diffusion approximation methods into genetics; Fisher (1937) was the first to consider spatial disperal using a rea...

Crow and Kimura back in print

less than 1 minute read

A new printing of a classic population genetics text has been issued this year: An Introduction to Population Genetics Theory, by James Crow and Motoo Kimura.

Molecular systematics and species trees

3 minute read

I’d like to point readers to a recent essay in Evolution, by Scott V. Edwards, titled, “Is a new and general theory of molecular systematics emerging?”

Quote: Fisher defining epistasis

2 minute read

People often complain that R. A. Fisher wrote in a hard-to-read style; unnecessarily verbose and indirect. Either I don’t tend to mind, or I find that the st...

Phenotypic variance

3 minute read

I’ve intermittently been reading through William Provine’s The Origins of Theoretical Population Genetics. It’s related to a project simmering on my back bur...