Mendel - Mendel's beliefs and Exceptions 1. Gregor Mendel:...

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Mendel’s beliefs and Exceptions 1. Gregor Mendel: grew up on a small farm in former Austria (Czech Republic). Entered Monastery in1893 at the age of 21. He failed his teaching examination and attended the University of Vienna. Around 1857 he began growing pea plants to study inheritance in abbey garden. 2. His beliefs/Exceptions a. Principle of hereditary continuity: factors are transmitted from generation to generation, may not appear in phenotype, but are never lost. i. Mendel crossed purple and white flowers, all f1 generation was purple, but in the f2 generation, the white reappears in a 1:3 ratio. ii. Exception: Mutations can occur: change in DNA of a gene ultimately creating genetic diversity. Old allele (alternate versions of a gene) gone. iii. If there is a bad allele, over time natural selection erases it from some gene pools. b. Principle of Unit Characters: organisms have characteristics that have contrasting trait versions of alleles lend to diversity. i.
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Mendel - Mendel's beliefs and Exceptions 1. Gregor Mendel:...

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