Fig. 5From: Expansion of the HSFY gene family in pig lineagesHSFY copy number estimates. Estimated copy number of HSFY in suid species measured relative to SRY. Two SRY copies are present in S. scrofa; SRY copy numbers in other species are unknown, hence estimates are shown for one and two copies. In both cases, there is a clear difference between high HSFY copy number species and low copy number species; this can be explained by two separate amplifications - one in the P. larvatus lineage, and one in the Sus lineage. Note that estimates assume 100 % PCR efficiency and equal signal from all amplicons, and cannot detect any copies with variation at the primer binding sites. Full data is given in Table 1 Back to article page