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Sex-Differential Selection and the Evolution of X Inactivation Strategies

Figure 1

Relationship between X inactivation rule and parent-of-origin dominance coefficients (hmat, hpat; see Table 1).

Results are based on the power function for female fitness, w(x) = 1−xksf, where x represents the proportion of female cells expressing the A1 allele, sf is the haploid or homozygous selection coefficient, h is the degree of masking (equivalent to a dominance coefficient of A1) in individuals practicing unbiased RXI (ξ11 = ½), and k = −ln(2)/ln(h). For additional details, see the main text. The figure is modified from, and inspired by, Figure 1a of [50].

Figure 1