Columns correspond to individual identity ( ANIMAL), maternal identity ( MOTHER), year of birth ( BYEAR), sex ( SEX, where 1 is female and 2 is male), birth weight ( BWT), and tarsus length ( TARSUS). The phenotype data, as well as additional factors and covariates that we may wish to include in our model are contained in gryphon.txt. For later-born individuals maternal identities are all known but paternity information is incomplete (a common situation in real world applications). Note that this is a multigenerational pedigree, with the earliest generation (for which parentage information is necessarily missing) at the beginning of the file. The pedigree file gryphonped.txt contains three columns containing unique IDs that correspond to each animal, its father, and its mother. The structure and contents of these files is fairly self-explanatory. Open gryphonped.txt and gryphon.txt in your text editor.
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