Table 2. Even without ATP-analog, hhp1-as hhp2∆ mutant has strongly reduced meiotic recombination but only weakly reduced viable spore yield.

Relevant genotype	ade6—arg1 a		ade6-M26 x ade6-52 b		Relative viable spore yield c
	– analog	+ analog	– analog	+ analog	– analog	+ analog
hhp1 + hhp2 +	64	71	3800	1300	100 (2)	35 (2)
hhp1-as hhp2∆	2	5	9	12	29 (4)	0.08 (4)
rec12∆	<0.7 d	– e	<5 f	–	22 (2)	14 (2)
hhp1-as hhp2∆ rec12∆	–	–	–	–	35 (4)	0.14 (4)

^a Data are cM, calculated from the observed recombinant fraction using Haldane’s equation.

^b Data are the number of Ade⁺ recombinants per million viable spores.

^c Data, from (n) crosses, are the mean viable spore yield per viable cell of the less numerous parent in each cross relative to that of hhp1⁺ hhp2⁺ without analog (4.9).

^d Data are from [63].

^e Not determined.

^f Data are from [64].