BIOL 261 Study Guide - Comprehensive Midterm Guide: Sister Chromatids, Mendelian Inheritance, Y Chromosome
Document Summary
Wild type the most common form of any property of an organism. Mutants heritable variants observed in an organism that differs from the wild type. Phenotypes the alternative forms of the property. Polymorphisms the coexistence of two or more reasonably common phenotypes of a biological property. The test for single-gene inheritance is to mate individuals showing the mutant property with the wild-type and then analyze the first and second generation of descendants (forward genetics) Key concept: the genetic approach to understanding a biological property is to iscover the genes that control it. One approach to gene discovery is to isolate mutants and mutant expression of the property in descendants. Gregor mendel = og single-gene inheritance rule maker. All of the lines used by mendel were pure lines, meaning that, for the phenotype in question, all offspring produced by matings within the members of that line were identical. The first progeny generation = first filial generation, f1.
