Map distance from the gene to centromere =	# of MII asci/2	x 100
	total # of asci

 

Linked genes:	PD asci= NPD asci
	NPD asci / Tetratype asci > 1/4

 

Unlinked genes:	PD asci >> NPD asci
	NPD asci / Tetratype asci <1/4

 

Map distance between 2 genes:	(# of Tetratype asci / 2) + (# of NPD asci)	x 100
	total # of asci