qtl (version 1.66)

fake.f2: Simulated data for an F2 intercross

Description

Simulated data for an F2 intercross, obtained using sim.cross.

Usage

data(fake.f2)

Format

An object of class cross. See read.cross for details.

Author

Karl W Broman,

Details

There are 200 F2 individuals typed at 94 markers, including 3 on the X chromosome. There is one quantitative phenotype, along with an indication of sex (0=female, 1=male) and the direction of the cross (pgm = paternal grandmother, 0=A, meaning the cross was (AxB)x(AxB), and 1=B, meaning the cross was (AxB)x(BxA)).

Note that the X chromosome genotypes are coded in a special way (see read.cross). For the individuals with pgm=0, sex=0, 1=AA and 2=AB; for individuals with pgm=0, sex=1, 1=A and 2=B (hemizygous); for individuals with pgm=1, sex=0, 1=BB and 2=AB; for individuals with pgm=1, sex=1, 1=A and 2=B. This requires special care!

The data were simulated using an additive model with three QTLs on chromosome 1 (at 30, 50 and 70 cM), one QTL on chromosome 13 (at 30 cM), and one QTL on the X chromosome (at 10 cM).

See Also

sim.cross, fake.bc, fake.4way, listeria, hyper, bristle3, bristleX

Examples

data(fake.f2)
summary(fake.f2)
plot(fake.f2)