Comparative genome mapping of sorghum and maize

Article Abstract:

A study was conducted to examine linkage relationships which influence genome mapping of sorghum and maize. Such relationships were observed among 85 maize low copy number nuclear DNA probes and seven isozyme loci from a sorghum cross. Thirteen linkage groups were named over the ten sorghum chromosomes. Maize DNA probes generated the sorghum linkage maps which presented inferences for explaining divergence among both genomes. Results show that the duplications and inversions or intrachromosomal translocations were the primary processes in genome divergence.

Corn, Sorghum

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High density molecular linkage maps of the tomato and potato genomes

Article Abstract:

High density molecular linkage maps describing tomato and potato genomes were constructed for analysis. The maps are composed of over 1000 markers possessing average spaces of 1.2cM (ca.900kb). Since the two maps were derived on a single probe set, breakpoints corresponding to 5 chromosomal inversions which would explain genome variation can be identified. The presence of such maps for tomato and potato provides bases for chromosome walking, quantitative trait mapping, marker-assisted breeding and evolutionary studies involving the two crops.

Potatoes, Tomatoes

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Generation of a restriction fragment length polymorphism linkage map for Toxoplasma gondii

Article Abstract:

A genetic linkage map describing Toxoplasma gondii was developed and analyzed. The map for the parasitic protozoan was made by using randomly selected low copy number DNA markers defining restriction fragment length polymorphisms (RFLPs). An analysis of inheritance patterns of 64 RFLP and two phenotic type markers was done. Results indicate that most chromosomes did not undergo internal and intramolecular recombination. These results prove that unknown gene linkage can be established with minimal DNA markers.

Genetic polymorphisms, Restriction enzymes, DNA, DNA restriction enzymes

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