BIOL 1000 Chapter Notes - Chapter 10: Punnett Square, Dihybrid Cross, Zygosity
16 Apr 2016
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10. 1) the beginnings of genetics: mendel"s garden peas. Scientists and the general public believed in the blending theory of inheritance, which suggested that hereditary traits blend evenly in offspring though mixing of the parents" blood. In his work with peas, mendel studied a variety of heritable characteristics called characters, such as flower color or seed shape. A variation in a character, such as purple or white flower colour, is called a trait. Mendel established that characters are passed to offspring in the form of discrete hereditary factors, which are now known as genes. Mendel observed that rather than blending evenly, many parental traits appear unchanged in offspring, whereas other disappear in one generation to reappear unchanged in the next. 10. 1a) mendel chose true breeding garden peas for his experiment. The plant could be grown easily in the monastery garden, without elaborate equipment. Cross-pollination or cross, allowed mendel to test the effects of mating pea plants of different parental types.
