Dynamic changes of chromosomal haplotype frequencies for gene duplication during resolution (neofunctionalization and nonfunctionalization) under slight positive selection. Assume μneo = 10-6, μnon = 10-4, and s = 10-6. In subplot A, numerical results are obtained under the DNR selective model; in subplot B, numerical results under the HI selective model. Solid and dashed curves are numerical results for linked and unlinked gene duplication, respectively. Red, gree and blue curves are numerical results for frequencies of chromosomal haplotypes "00", "01" (or "10") and "02" (or "20"), corresponding to y0, y1 and y2, respectively. In subplots A and B, for linked gene duplication, curves of y2 are nearly coincident with x-axis.