Biology 1201A Lecture Notes - Probability Distribution, Zygote, Meiosis
21 Oct 2013
School
Department
Course
Professor
Document Summary
10. 1 the beginnings of genetics: mendel"s garden peas: Blending theory of inheritance: believed before mendel"s theories introduced that stated that parents" blood mixed to create a middle in the offspring. He studied characters, heritable characteristics such as flower color, seed shape. Traits were known to be variation in character. Characters are passed to offspring in the form of discrete hereditary factors (genes) Sometimes characters appear in offspring unchanged, sometimes they skip a generation. Mendel chose true-breeding garden peas for his experiments. Mendel prevented self-fertilization and pollenated flowers with different ones to create cross-pollination (cross) He used true-breeding plants that did not pass traits that change from one generation to the next. Used purple flowers to pollinate white ones and vice versa. However, the f2 offspring of these cross-bred flowers were purple and white (3:1) P generation: parental plants used in the initial cross. F1 generation: first generation of offspring from the cross.
