Biology 1201A Lecture Notes - Lecture 10: Pea, Gynoecium, Red
31 Oct 2017
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10. 1- the beginning of genetics: mendel"s garden peas: before 1900, people believed in blending theory of inheritance (traits blend evenly in offspring through mixing of parents blood, mendel was an augustinian monk who studied chem, zoology, botany, study: Female gametes are egg cells (produced in carpel of flowers: normally pea plants self-fertilize/pollinate, but mendel cut off anthers to prevent self fertilization. Pollen to fertilize these flowers had to come from another plant (cross-pollination: mendel chose true-breeding pea plants that self-fertilized (passed traits without change from one generation to the next) October 19, 2015: seeds were the result of the crosses: each seed contains a zygote or embryo that will become a new pea plant. Parents of this cross are p generation: result: all flowers in f1 were pure purple, then let f1 generation self-fertilize into f2 generation, result: 25% white and 75% purple flowers were produced. 10. 1c- segregation: made hypothesis to explain his experiment results, first hypothesis.
