Cross Type

Use the drop-down menu to specify the experimental crossing type.

Note : As this parameter is used in multiple processes, actual options might vary.

Cross types are described in the following table:

Cross Type	Description
BC1	Backcross of the F1 lines to P1 (data should be AA and AB genotypes ).
BC2	Backcross of the F1 lines to P2 (data should be AB and BB genotypes).
F2	F2 intercross of F1 offspring generated by homozygous parental lines P1 and P2.
RILself or RI1	Selfing F1 offspring from a cross of homozygous parental lines P1 and P2 for many generations to generate recombinant inbred lines.
RILsib or RI2	Sibling pair mating for many generations to produce recombinant inbred lines.
DH or RI0	Generation of a doubled-haploid line.
SFn	Sequentially selfing F1 offspring from a cross of homozygous parental lines P1 and P2 for n -1 generations ( n larger than 1).
IRILself	Intercrossed recombinant inbred line formed by n generations of random mating prior to selfing.
IRILsib	Intercrossed recombinant inbred line formed by n generations of random mating prior to sibling pair mating.
B1n	Backcross design F1xP1, where n is the Genotyping Generation (the number of backcrosses to P1).
B2n	Backcross design F1xP2, where n is the Genotyping Generation (the number of backcrosses to P2).
RI2	Recombinant inbred via random mating.
RFn or AIL	Sequentially random mating F2 offspring from a cross of homozygous parental lines P1 and P2 for n -1 generations ( n larger than 2).
T(B1)SFn	Testcross of SFn to P1.
T(B2)SFn	Testcross of SFn to P2.
T(B1)RFn	Testcross of RFn to P1
T(B2)RFn	Testcross of RFn to P2
T(SFm)SFn	Testcross of SFn for m generations.

To Specify the Type of Experimental Cross:

Make a selection using the drop-down menu.

References:

Darvasi, A and M Soller. (1995) Advanced Intercross Lines, an Experimental Population for Fine Genetic Mapping. Genetics 141: 1199-1207.

Martin, OC, and F Hospital. (2006) Two- and three-locus tests for linkage analysis using recombinant inbred lines. Genetics 173: 451-459.

Wu RL, C-X Ma, and G Casella. (2007) Statistical Genetics of Quantitative Traits: Linkage, Maps, and QTL. Springer-Verlag, New York.