Has President Obama broken a promise on offshore drilling?

Posted on By David Shiffman 15 Comments on Has President Obama broken a promise on offshore drilling?
Conservation

I received an e-mail from Oceana today encouraging me to “tell President Obama to keep his promise”. The e-mail claims that while running for President, he campaigned against offshore oil drilling, which would make his recent announcement about allowing offshore drilling a broken promise indeed. However, I seem to remember that Obama as a candidate was for offshore drilling. I went to my favorite non-partisan fact check website, Politifact, to sort this out.

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An update on WhySharksMatter’s first PCR

Posted on By David Shiffman 1 Comment on An update on WhySharksMatter’s first PCR
Science

I know that many of you have been losing sleep over the questionable quality of my first PCR and gel. Well, the mystery has been solved! My lab partner made the gel with DI water instead of with TAE/agarose solution. Not only is that an easily fixable problem for the future… it’s something that, for … Read More “An update on WhySharksMatter’s first PCR” »

Crowdsourcing ConGen – Populations in Hardy-Weinberg Equilibrium

Posted on By Andrew Thaler
Conservation, Science

This post is part of the Crowdsourcing ConGen project. Crowdsourcing is the process of opening up a resource to a community for input and contributions. Throughout the coming year I’ll be posting manageable pieces of this document for the audience of Southern Fried Science to read and review. Please visit the main post for an overview.

“I have never done anything useful. No discovery of mine has made, or is likely to make, directly or indirectly, for good or ill, the least difference to the amenity of the world.” ~ Godfrey Harold Hardy

The simplest model for a population is one in which the frequencies of alleles and genotypes remains constant from generation to generation. Under this model, there are no outside forces influencing selection, there is no tendency for any allele or genotype to be favored over any other, diploid alleles will recombine randomly in accordance with Mendelian inheritance. A population that behaves this way is said to be in Hardy-Weinberg Equilibrium. This almost never happens.

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