Table 1. Spore Viability of Four-Spore Tetrads.

Strain	Genotype	% of viable spores	# of spores
WHY3285	ho::hisG/″, leu2::hisG/″, HIS4::LEU2-(BamHI)/his4-X::LEU2-(BamHI)–URA3	99	240
WHY6082	WHY3285, pch2Δ::KanMX4/″	84	216
WHY6448	WHY3285, red1Δ::KanMX4/″	0	216
WHY10491	WHY3285, pch2Δ::KanMX4/″, red1Δ::KanMX4/″	<1	288
WHY10532	WHY3285, XRS2-13myc::KanMX4/″, red1Δ::KanMX4/″	0	216
WHY10533	WHY3285, xrs2ΔN-13myc::KanMX4/″, red1Δ::KanMX4/″	0	216
WHY10535	WHY3285, red1Δ::KanMX4/″, dot1Δ::KanMX4/″	<1	220
WHY9523	WHY3285, red1Δ::KanMX4/″, rec8Δ::leu2/″	0	144
WHY9174	WHY3285, pph3Δ::KanMX4/″	51	216
WHY10541	WHY3285, pph3Δ::KanMX4/″, red1Δ::KanMX4/″	<1	216

Spore viabilities were determined following sporulation in liquid medium at 30°C.