simulatePedigree {BGmisc}

Simulate Pedigrees This function simulates "balanced" pedigrees based on a group of parameters: 1) k - Kids per couple; 2) G - Number of generations; 3) p - Proportion of males in offspring; 4) r - Mating rate.

Description

Simulate Pedigrees This function simulates "balanced" pedigrees based on a group of parameters: 1) k - Kids per couple; 2) G - Number of generations; 3) p - Proportion of males in offspring; 4) r - Mating rate.

Usage

simulatePedigree(
  kpc = 3,
  Ngen = 4,
  sexR = 0.5,
  marR = 2/3,
  rd_kpc = FALSE,
  balancedSex = TRUE,
  balancedMar = TRUE,
  verbose = FALSE
)

Arguments

kpc

Number of kids per couple. An integer >= 2 that determines how many kids each fertilized mated couple will have in the pedigree. Default value is 3. Returns an error when kpc equals 1.

Ngen

Number of generations. An integer >= 2 that determines how many generations the simulated pedigree will have. The first generation is always a fertilized couple. The last generation has no mated individuals.

sexR

Sex ratio of offspring. A numeric value ranging from 0 to 1 that determines the proportion of males in all offspring in this pedigree. For instance, 0.4 means 40 percent of the offspring will be male.

marR

Mating rate. A numeric value ranging from 0 to 1 which determines the proportion of mated (fertilized) couples in the pedigree within each generation. For instance, marR = 0.5 suggests 50 percent of the offspring in a specific generation will be mated and have their offspring.

rd_kpc

logical. If TRUE, the number of kids per mate will be randomly generated from a poisson distribution with mean kpc. If FALSE, the number of kids per mate will be fixed at kpc.

balancedSex

Not fully developed yet. Always TRUE in the current version.

balancedMar

Not fully developed yet. Always TRUE in the current version.

verbose

logical If TRUE, print progress through stages of algorithm

Value

A data.frame with each row representing a simulated individual. The columns are as follows:

• fam: The family id of each simulated individual. It is 'fam1' in a single simulated pedigree.

• ID: The unique personal ID of each simulated individual. The first digit is the fam id; the fourth digit is the generation the individual is in; the following digits represent the order of the individual within his/her pedigree. For example, 100411 suggests this individual has a family id of 1, is in the 4th generation, and is the 11th individual in the 4th generation.

• gen: The generation the simulated individual is in.

• dadID: Personal ID of the individual's father.

• momID: Personal ID of the individual's mother.

• spID: Personal ID of the individual's mate.

• sex: Biological sex of the individual. F - female; M - male.