latest news

4.19.2009

Pictures my Environmental Restoration course fieldtrip to the Kissimmee River restoration project.

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2.7.2009

Check out pictures my Environmental Restoration course fieldtrip to the Snook Island restoration project.

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11.23.2008

See video and pictures of FAU's fieldtrip to Stone Mountain State Park, NC

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06.30.2008

Read my diary of field research experiences in the Broad River watershed of northeast Georgia.

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04.07.2008

I've got a new web page, so if you are looking for TETRASAT look here.

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contact information

Scott Markwith, Ph.D.
Assistant Professor
Department of Geosciences Florida Atlantic University
777 Glades Road
Boca Raton, FL 33431

Work Phone: 561-297-2102 Fax: 561-297-2745
Email: smarkwit@fau.edu

TETRASAT

TETRASAT (Markwith et al., 2006) was written for the purpose of calculating genetic diversity, He, and H', and population differentiation, Gst, statistics for populations of allotetraploid species that have been analyzed using mircosatellite markers. Due to the exponential amplification process, allele copy number cannot be determined for partial heterozygote individuals, thus existing methods of calculating these statistics are largely inadequate. TETRSAT uses an iterative substitution process to determine all possible combinations of genotypes and allele frequencies for each population, and subsequently calculates the necessary statistics. More information concerning the impetus behind the development of TETRASAT, the logic behind its operation, and its utility can be found in Markwith et al. (2006).

example graphic

The figure above shows TETRASAT's simple user's interface.

Download

Download the program TETRSAT by clicking here.

Download the program's User's Manual by clicking here.

Download Sample Input Data by clicking here.