BISC 1111 Chapter Notes - Chapter 14.1-14.2: Heredity, Somatic Cell, Gamete
8 Feb 2017
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Mendel discovered the basic principles of heredity by breeding garden peas in carefully planned experiments. Character- a heritable feature that varies among individuals, such as flower color. Trait- each variant for a character, such as purple or white color for flowers. The mating, or crossing, of two true-breeding varieties is called hybridization. The true-breeding parents are referred to as the p generation (parental generation), and their hybrid offspring are the f1 generation: allowing these f1 hybrids to self-pollinate (or to cross-pollinate with other f1 hybrids) produces an f2 generation. Mendel concluded that the purple flower color is a dominant trait, and the white flower color is a recessive trait. Mendel concluded 4 related concepts making up a model to explain the 3:1 inheritance: 1) alternative versions of genes account for variations in inherited characters. These alternative versions of a gene are called alleles.
