makeTwins

A function to impute twins in the simulated pedigree data.frame. Twins can be imputed by specifying their IDs or by specifying the generation the twin should be imputed. This is a supplementary function for simulatePedigree.

Usage

makeTwins(
  ped,
  ID_twin1 = NA_integer_,
  ID_twin2 = NA_integer_,
  gen_twin = 2,
  verbose = FALSE,
  zygosity = "MZ",
  twin_sex = "R"
)

Arguments

ped

A data.frame in the same format as the output of simulatePedigree.

ID_twin1

A vector of ID of the first twin.

ID_twin2

A vector of ID of the second twin.

gen_twin

A vector of generation of the twin to be imputed.

verbose

logical. If TRUE, print progress through stages of algorithm

zygosity

A character string indicating the zygosity of the twins. Default is "MZ" for monozygotic twins.

twin_sex

A character string indicating the sex of the twins. Default is randomly assigned ("R"). If specified, it should be either "M" or "F"

Value

Returns a data.frame with MZ twins information added as a new column.