High Levels of Sequence Polymorphism and Linkage Disequilibrium .
. denoted by a horizontal arrow, and polymorphic sites are denoted by a vertical arrow. .. text; and other repeats, by plain text. b, Diagram representing the deletion allele and .. SM Fullerton, RC Griffiths, J Bond, MJ Cox, JA Schneider, DS Moulin, et al. . High-resolution mapping of crossovers in human sperm defines a.