BIOL 205 Lecture Notes - Meristem, Molecular Machine, Microtubule
27 Sep 2013
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Document Summary
There are many types of analytical approaches to gene discovery, the most common being detection of single-gene inheritance patterns. Inheritance patterns may be recognized in the progeny of controlled matings or crosses. In this case, we mate a mutated form of the property with a wild type form and the ratio of wild to mutant reveals whether a single gene controls that difference in property under study. The use of mutants in this way is called genetic dissection. We visually screen a large number of individuals, looking for a chance occurrence of mutants in that population. Single gene inheritance patterns are useful in human genetics: cystic fibrosis and tay-sachs disease are inherited as a single mutant gene. An organism"s unique and complete set of genetic information is its genome. In eukaryotes, the bulk of the dna of a genome is found in the nucleus of each cell and this nuclear dna is divided into units called chromosomes.
