Linkage map distance (c) in Morgans was calculated by dividing the total size of the MARC linkage map distance by the physical genomic size (Btau 4.
Number of markers, map distances and adjacent linkage disequilibrium on 29 autosomes (BTA) BTA SNP BTA No of SNP length (Mb) density (Mb) Mean D' 1 296 145 0.
This Z value is used with a lookup table to extrapolate a map distance between two genes (Griffiths et al.
This method of calculating map distance between linked genes using F2 data is an effective method of generating mapping data for students to use in lab.
As an extension of this exercise, students could speculate as to why the map distance calculated in lab did not agree with the published map distance.
Table for determining map distance between two linked genes in a dihybrid cross.
Genotypes in the founder (base) population were in Hardy-Weinberg equilibrium and at gametogenesis in each subsequent generation such that maternal and paternal chromosome segments were inherited assuming no interference in recombination and utilizing Haldane's map distances (Lynch and Walsh, 1998).
The accuracies of GEBV using the estimated allele frequencies at generation 8 to 10 were almost the same as those using the true allele frequencies from the founder population regardless of map distances.
The estimation of map distances
from recombination values.