Population Genetics: When Darwin Met Mendel – Crash Course Biology #18

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Hank talks about population genetics, which helps to explain the evolution of populations over time by combing the principles of Mendel and Darwin, and by means of the Hardy-Weinberg equation.

Table of Contents:
1. Population Genetics 1:05
2. Population 1:14
3. Allele Frequency 1:41
4. 5 Factors 1:58
a) Natural Selection 2:12
b) Natural Selection/Random Mating 2:27
c) Mutation 3:18
d) Genetic Drift 3:49
e) Gene Flow 4:05
5. Hardy-Weinberg Principle 4:45
6. Hardy-Weinberg Equilibrium 5:15
7. Hardy-Weinberg Equation 6:18

This video contains the following sound from Freesound.org:
“LucasGonze-HomestyleMandolin-17.aiff” by lucasgonze

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  1. Yo! The Math at the end doesnt add up. If you add all of the values it doesnt make 1. [0.42+0.49+0.7=1.61]

  2. – Random mating encounters: Yep, makes sense.
    – Furious genes, Tokyo drift: Mmhm, piece of cake.
    – Harvey-Weinstein equation: Got it!
    I'm gonna annihilate this exam.

  3. These patterns intrigued geneticist Reginald Punnett so in 1908, he consulted with his friend and colleague Godfrey Hardy, an eminent mathematician, who wrote a solution without hesitation on the nearest napkin… Voila, the Hardy Weinberg equation.

  4. I absolutely love the videos. Has helped me better understand my genetics professor and you actually make it fun

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