Copy Number of Phenotype Genes in A. thaliana and Rice.
(A) Frequency distribution of the number of paralogs (copy number) in the sets of lethal, nonlethal, and undocumented (i.e., no documented phenotype) genes.
(B) Distributions of orthologous group sizes between A. thaliana and rice. Rows indicate A. thaliana gene copy numbers in the orthologous groups, while columns denote phenotype categories.