lecture8 - Gregor Mendel - "The father of...

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Unformatted text preview: Gregor Mendel - "The father of genetics" Before Mendel (around 1865), almost nothing was know about genetics. Common sense observations led most people to believe in what we might call "blending" inheritance. Mendel was the Frst to do experimentation and propose theories of inheritance that made sense and were testable. What the heck did he do? He Used the pea plant, Pisum- why? He had some of them (availability) They can self-pollinate or cross-pollinate They produce many offspring They have a short generation time Unlike animals, they do not run away when you try to get them to breed and count offspring Seven traits were studied All of these traits could be found in two forms in pea plants, ie., purple vs. white Fowers; tall vs. short plants; green vs. yellow seeds; etc. Let us now examine his experimental rationale We will use Fower color in our example, because I like it! Pisum fowers could be... Either purple Or white (OK, those were the only fowers I could Fnd, but you get the idea ) Experimental rationale 1. Create pure-breeding lines of both purple and white Fowered plants....
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This note was uploaded on 09/23/2009 for the course BIO 150 taught by Professor Schmidt during the Spring '08 term at SUNY Stony Brook.

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lecture8 - Gregor Mendel - "The father of...

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