A Primer of Conservation Genetics by Richard Frankham

By Richard Frankham

Meant for people with a restricted history in genetic reports, this concise, entry-level textual content in conservation genetics is gifted in a ordinary layout, with details essentially highlighted. Solved difficulties are supplied all through to assist illustrate key equations, even though a easy wisdom of Mendelian genetics and straightforward information is believed. A word list and proposals for extra interpreting offer extra aid for the reader. quite a few pen-and-ink snap shots of endangered species convey the cloth to existence. additionally to be had: creation to Conservation Genetics "...balance[s] scholar desire for readability and brevity with the necessities of conservation pros for particular applications." selection 0-521-63014-2 Hardback $130.00 C 0-521-63985-9 Paperback $50.00 D

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These are the major histocompatibility complex (MHC -- a large family of genes that play a central role in the vertebrate immune system and in fighting disease) and self-incompatibility (SI) loci in plants. Both regions have extremely high levels of genetic diversity due to natural selection that favours differences among individuals within populations. Microsatellites are now used routinely to measure genetic diversity in a variety of species, many of them endangered. They typically show very high levels of polymorphism and many alleles per locus.

Much of the DNA in an organism does not code for functional products. There are two important exceptions to the generalization that polymorphism is lowest in regions with important functions. These are the major histocompatibility complex (MHC -- a large family of genes that play a central role in the vertebrate immune system and in fighting disease) and self-incompatibility (SI) loci in plants. Both regions have extremely high levels of genetic diversity due to natural selection that favours differences among individuals within populations.

Genetic diversity is only regenerated by mutation over periods of hundreds to millions of generations Migration and gene flow Unlike the slow process of mutation, mixture of alleles from two or more genetically differentiated populations can rapidly restore genetic diversity. The benefits, and potential hazards, of managed gene mixing to restore genetic diversity in endangered species are discussed in Chapter 7. The gene pools of partially isolated populations diverge over time as a result of chance and selection.

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