BISC 1403 Study Guide - Midterm Guide: Norman Horowitz, Stillbirth, Monosomy
18 Dec 2017
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Chapter 14: mendel and the gene idea: the idea that genetic material from the two parents blends together (like blue and yellow paint blend to make green) It predicts that over many generations, a freely mating population will give rise to a uniform population of individuals, something we don"t see. It fails to explain how traits can reappear after they have skipped a generation: particulate hypothesis, the idea that parents pass on discrete heritable units (genes) In this model, parents pass on discrete heritable units-units-that retain their separate identities in offspring. Ex: flower color, eye color, hair color: each variant for a character, such as purple or white color for flowers, is called a trait. Each flower has sperm-producing organs (stamens) and an egg-producing organ (carpel) Cross-pollination (fertilization between different plants) involves dusting one plant with pollen from another: crossing pea plants, application: By crossing (mating) two true- breeding varieties of an organism, scientists can study patterns of inheritance.
