R: Simulated data for an F2 intercross

fake.f2 {qtl} | R Documentation

## 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.

### 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).

### Author(s)

Karl W Broman, broman@wisc.edu

### See Also

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

### Examples

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

[Package qtl version 1.46-2 Index]