A matrix with 15 rows giving (individual, father, mother) triplets.
The column labels are ind, pa, and ma.
The names are letters of the alphabet.
There are 21 individuals in this pedigree in all.
There are \(21 - 15 = 6\) founders.
References
Thompson, E. A. (1986)
Ancestry of alleles and extinction of genes in populations with defined
pedigrees.
Zoo Biology, 5, 161--170.
tools:::Rd_expr_doi("doi:10.1002/zoo.1430050210").