Eric’s Enlightenment for Thursday, April 23, 2015

  1. Reaching the NBA Finals has been much more difficult in the Western Conference than in the Eastern Conference in the past 15 years.
  2. In terms of points above average shooter per 100 shots, Kyle Korver ranks first in 2014-2015 with +30.4 points.  DeAndre Jordan ranks second with +17.4 points.  (Incredible!)
  3. Evan Soltas evaluates “the rent hypothesis” – the claim that a larger share of income in recent years are unearned gains.  (More rigorous, rent is “a payment for a resource in excess of its opportunity cost, one that instead reflects market power”.)  This is Evan’s most read article.
  4. A research team led by Junjiu Huang from 中山大学 (Sun Yat-Sen University) have successfully “edited the genes of human embryos using a new technique called CRISPR”.  Carl Zimmer provides some background.  (HT: Tyler Cowen.)

Video Tutorial – Allelic Frequencies Remain Constant From Generation to Generation Under the Hardy-Weinberg Equilibrium

The Hardy-Weinberg law is a fundamental principle in statistical genetics.  If its 7 assumptions are fulfilled, then it predicts that the allelic frequency of a genetic trait will remain constant from generation to generation.  In this new video tutorial in my Youtube channel, I explain the math behind the Hardy-Weinberg theorem.  In particular, I clarify the origin of the connection between allelic frequencies and genotyopic frequencies in the second generation – I have not found a single textbook or web site on this topic that explains this calculation, so I hope that my explanation is helpful to you.