Ch2 Book Notes -...

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Gene- region of DNA that encodes a specific protein or a particular type of  RNA Background: The Historic Puzzle of Inheritance 1 st  applied genetic technique- artificial selection o more tame wolves-> modern dogs o agriculture Misconceptions before Mendel o One parent contributes most to an offspring o Blended inheritance Advantages to peas o Can self fertilize o Flowers make it easy to cross fertilize o Large numbers in each generation o Short growing season o Clear cut traits (no intermediate)- ‘antagonistic pairs’ Experiments o Pure breeding lines for each pair o Cross fertilized to get hybrids o Matings were carefully controlled o Reciprocal cross- reverse mom and dads traits Disproved that one parent gives more to offspring o Large numbers – reveal patterns Genetic Analysis According to Mendel Monohybrid cross o Cross 2 trait (P generation)-> all one trait (F1)-> self fertilize -> get 3:1 ratio of both traits (F2)
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Ch2 Book Notes -...

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