Hank and his brother John discuss heredity via the gross example of relative ear wax moistness.
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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 Support CrashCourse on Subbable: http://subbable.com/crashcourse
I don't know if Im doing this right but I made a punnet square and put XX and Xy for the 23 chromosome and it looks like its a 50 50 chance of having a boy or a girl but theres a study that when people were not doing well that had more girls than boys so how does where someone live or how they live there life affect the outcome
polygenic trait: bunch of genes code for a single trait
pleiotropic: one gene influences many traits/phenotypes
mendelian trait: one gene codes for a single trait
polyploid: more than two sets of chromosomes
autosomes: non sex chromosome
love your videos - but if you're not American - the talking is all a little too fast! (eg: for your Antipodean/European Followers!) I'd use them more often in my classes, etc, but sometime too quick and the kids can't understand what you're saying! (even in English first language classes/countries! - an accent thing perhaps!)
Small mistake: The dominant and recessive traits should both be written based off of the first letter of the RECESSIVE trait, instead of the dominant one. Therefore 'D'ry earwax (recessive) would be d and wet earwax (dominant) would be D.
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