FIG 6 .
Parallel origin of a de novo gene. (A) Distribution of two S288C de novo genes in the S. paradoxus population. The maximum likelihood phylogeny was reconstructed using concatenated sequences of 1,000 aligned single-copy genes that are universally present in all S. paradoxus strains and the S. mikatae IFO 1815 strain (root species). Colors on the tree represent different subpopulations. (B) The ancestral states of YJR087W at the origin of S. paradoxus. The possibility is 70% absence and 30% presence, as shown in the pie.