A Primer of Conservation Genetics by Richard Frankham

By Richard Frankham

Meant for people with a restricted historical past in genetic reviews, this concise, entry-level textual content in conservation genetics is gifted in a undemanding structure, with details basically highlighted. Solved difficulties are supplied all through to assist illustrate key equations, even if a easy wisdom of Mendelian genetics and straightforward statistics is thought. A thesaurus and recommendations for extra interpreting supply extra help for the reader. a variety of pen-and-ink photos of endangered species convey the cloth to existence. additionally to be had: creation to Conservation Genetics "...balance[s] pupil want for readability and brevity with the necessities of conservation pros for specific applications." selection 0-521-63014-2 Hardback $130.00 C 0-521-63985-9 Paperback $50.00 D

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Several species of plants have evolved tolerance to heavy metals in the process of colonizing polluted heavy-metal mine wastes and plants are progressively evolving resistance to herbicides. 1 Rapid adaptive evolutionary changes in rabbits in Australia following the introduction of myxoma virus as a control agent (Fenner & Ratcliffe 1965) SELECTION AND ADAPTATION European settlers introduced rabbits into Australia in the nineteenth century for sport hunting. Several unsuccessful attempts were made until genuine wild rabbits were introduced in 1859.

Museum skins and preserved tissues provide adequate material and even fossils may be genotyped. The only requirements are that the sample contains some undegraded DNA and that it is not contaminated with DNA from other individuals or closely related species. DNA amplification using PCR Many current methods of measuring DNA diversity rely on the polymerase chain reaction (PCR) which allows laboratory amplification of specific DNA sequences, often from small initial samples (Fig. 3). Genotyping of individuals can be done following non-invasive or ‘remote’ sampling and PCR amplification of DNA 23 24 GENETIC DIVERSITY Fig.

Values of p and q, calculated previously, are used to calculate p2 , 2pq and q2 . These frequencies are then multiplied by the total number (67) to obtain expected numbers for the three genotypes. The observed numbers for each genotype are very close to the numbers expected from the Hardy--Weinberg equilibrium. In general, agreement with expectations is found for most loci in large naturally outbreeding populations (more or less random mating). This does not mean that the loci are not subject to mutation, migration, selection and sampling effects, only that these effects are often too small to be detectable with realistic sample sizes.

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