TABLE 3.

Marker allele classes for linkage group 2 in M. hapla F₂ lines

	Marker allelea
	AF5		AF21	No. of lines
Class 1	a/a		a/a	102
Class 2	b/b		b/b	58
Class 3	b/b	××	a/a	14
Class 4	a/a	×	a/b	4
Class 5	a/a	××	b/b	2
Class 6	a/b	×	a/a	2
Class 7	a/b		b/b	1
Total				183

^aCrosses between columns indicate proposed recombination interval to generate each class. “×” represents a two-strand and “××” a four-strand exchange.