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Windows QTL Cartographer 2.5 - FTP Directory Listing

Windows QTL Cartographer 2.5 - FTP Directory Listing

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© 2010 N.C. State University, Bioinformatics Research Center<br />

Win<strong>QTL</strong>Cart Procedures 35<br />

T(B1)SF. Test cross, with genotyping done on an intercross (SF) and phenotyping on a cross (B1)<br />

derived from that intercross. Enter an integer indicating the generation.<br />

T(B1)RF. Test cross, with genotyping done on an intercross (RF) and phenotyping on a cross (B1)<br />

derived from that intercross. Enter an integer indicating the generation.<br />

T(B2)SF. Test cross, with genotyping done on an intercross (SF) and phenotyping on a cross (B2)<br />

derived from that intercross. Enter an integer indicating the generation.<br />

T(B2)RF. Test cross, with genotyping done on an intercross (RF) and phenotyping on a cross (B2)<br />

derived from that intercross. Enter an integer indicating the generation.<br />

Map Function<br />

A map function is a mathematical relationship between recombination probabilities and map distances.<br />

Select the function you want, based on the interference to be assumed.<br />

Haldane. The default option. Assumes no crossover interference.<br />

Kosambi. Assumes some interference.<br />

Fixed. The Morgan mapping function. Assumes complete interference.<br />

Note These mapping functions, among others, are discussed at length in Ben Lui's book,<br />

Statistical Genomics: Linkage, Mapping and <strong>QTL</strong> Analysis (1998).<br />

Distance type<br />

Position. Indicates that the numbers indicate positions from the left telomere of the current<br />

chromosome. This means the numbers should be in increasing order.<br />

Interval. Indicates that the numbers are for the interval distance after a marker. This means that<br />

the last number, and the last number only, should be zero.<br />

Distance units<br />

centiMorgan (cM). Very small. 100 centiMorgans=1 Morgan.<br />

Morgan. The distance over which, on average, one crossover occurs per meiosis.<br />

Recombination. Percentage of crossover events that occur between two markers.<br />

Related Topics<br />

MCD file format<br />

39<br />

Working with source file's individual information<br />

At the Source data manipulations pane on the Main window, click the Individual button to open the Add<br />

or Delete Individuals dialog.

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