It should be emphasized that mitochondrial DNA markers are maternally inherited and may not reflect

It should be emphasized that mitochondrial DNA markers are maternally inherited and may not reflect

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
It should be emphasized that mitochondrial DNA markers are maternally inherited and may not reflect the true evolutionary history of the entire populations. Hence it is advisable to have additional nuclear markers for ESU recognition such as allozymes, RAPDs or microsatellites . RAPDs are Randomly Amplified Polymorphic DNA. This method uses the polymerase chain reaction to amplify random regions of the genome with short random 10-base primers. Microsatellites are regions of the genome that vary in the number of tandemly repeated sequences. The repeats are short (2-4 base pair repeat unit), but there may be many of them in a row. Individuals differ in the number of repeat units they have and this difference can be determined by gel electrophoresis.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Another relevant level of concern is a Management Unit (MU) . These are defined as populations that have different frequencies of alleles, but do not necessarily show fixed differences between populations. Hence several MUs may exist within an ESU. The figures below illustrate the difference. The general lesson is that molecular approaches to conservation biology are potentially highly informative since many overt phenotypic characteristics cannot reveal important differences that distinguish populations. Since conserving endangered species is inherently a "genetic" endeavor, to the extent that we recognize species as discrete reservoirs of historically unique genetic material, the molecular approaches are very useful....
View Full Document

This note was uploaded on 11/06/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.

Ask a homework question - tutors are online