Hank and his brother John discuss heredity via the gross example of relative ear wax moistness. Like CrashCourse on Facebook! www.facebook.com Follow CrashCourse on Twitter! www.twitter.com This video uses sounds from Freesound.org, a list of which can be found, along with the REFERENCES for this episode, in the Google document here: dft.ba tags: crashcourse, science, biology, evolution, genetics, heredity, aristotle, bloodlines, gregor mendel, mendelian genetics, mendelian trait, classical genetics, chromosome, gene, polygenic, pleiotropic, allele, ear wax gene, somatic, diploid, gametes, sperm, egg, haploid, polyploid, dominance, dominant, recessive, heterozygous, homozygous, phenotype, punnett square, reginald c. punnett, sex-linked inheritance, autosome