CHEM-UA 109 Lecture Notes - Lecture 19: Mendelian Inheritance, Speciation, Phylogenetics
16 Aug 2016
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Mendelian genetics: gregor mendel crossed pea plants, peas good many different characteristics, can make a lot at once, genetics, mendel a. i. Crossed purple with white (pp x pp) plants a. i. 1. F1 cross: got 3:1 (p: p) ratio purple dominant, white recessive a. i. 1. a. Pp 50/50 chance of getting either b. ii. Separation of p and p allele: law of independent assortment c. i. Two genes do not affect one another - won"t influence one another: what is the probability that rryy x rryy would produce rryy? d. i. Rryy = ( ) = probability: huntington"s disease, degeneration of nerve fibers - uncontrollable shaking, then death, cannot see this until you"re middle aged, dominant trait (i. e. if you are hh, you have it. Speciation/reproductive isolation: species, allopatric (when 2 groups live in different lands, sympatric (live in same land - can have a mistake in number of chromosomes, etc. that are responsible for changes, create barriers a. i.
