Switch alleles at selected markers in a cross object.
An object of class
Names of markers whose alleles are to be switched.
For a 4-way cross, indicates how to switch the alleles (A
for B, C for D, both A for B and C for D), or both A for C and B for D (
For a backcross, we exchange homozygotes (AA) and heterozygotes (AB).
For doubled haploids and recombinant inbred lines, we exchange the two homozygotes.
For an intercross, we exchange the two homozygotes, and exchange C (i.e., not AA) and D (i.e., not BB). (The heterozygotes in an intercross are left unchanged.)
For a 4-way cross, we consider the argument
switch, and the
exchanges among the genotypes are more complicated.
The input cross object, with alleles at selected markers switched.
Karl W Broman, email@example.com
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