BIO 122 Lecture Notes - Lecture 11: F1 Hybrid, Gynoecium, Stamen
26 May 2016
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Document Summary
Idea that genetic material contributed by parents mix in a manner analogous to the way blue and yellow paints blend to make green. Predicts that over many generations, a freely mating population will give rise to a uniform population of individuals. Fails to explain the phenomena of inheritance (traits reappearing after skipping a generation) Parents pass on discrete heritable genes that retain their separate identities in offspring. Genes are shuffled and passed along from generation to generation. Mendel chose to work w/ peas because: He could strictly control mating between plants via cross pollination. He also only tracked purple or white, and made sure to start experiment w/ true- breeding varieties. Cross pollination: used to study patterns of inheritance. Fertilization between two plants by removing the stamen (holds sperm grain) before they produced pollen and then dusted pollen from from another plant onto the altered one. Each resulting zygote develops into a plant embryo in a seed/ pea.
