"You are what your grandmother ate" - Neil deGrasse Tyson

Supplementary videos

How many carpels does a banana have? (a pea has one)
Epigenetic inheritance (you are what your grandmother ate) 3:00-7:10 agouti mice and epigenome (NOVA)
Blood groups and blood compatibility
Link Between Down Syndrome and Alzheimer's Disease
Calico cat and X inactivation: random deactivation of an X chromosome

Extra credit readings

• The Unfortunate Sex Life of the Banana Damn Interesting, 8/24/09
• How Down syndrome may help unravel Alzheimer's puzzle NBC News 9/6/13
• A Sweet Remedy for Huntington's? New Scientist 1/21/04

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