Figure 2.

PRNP polymorphism minor allele frequencies in U.S. beef (MBCDP2.1, n = 96) and dairy cattle (MDCP1.5, n = 96). Hatched bars represent the proportion of polymorphisms where the minor allele was observed in only one animal (singleton). Green and red colors represent the proportion of polymorphisms that have or have not been reported, respectively. Polymorphism numbers are show above bars. Multi-allelic polymorphisms are not represented.

Clawson et al. BMC Genetics 2006 7:51   doi:10.1186/1471-2156-7-51
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