Amino acid replacement: S277F.
C22123888T
S277F | mei-S332-PA; S277F | mei-S332-PB
S277F
Defects in sister chromatid cohesion. 2% total nondisjunction, hemizygotes showed a 6 fold increase in disjunction. Rare prophase cells were seen with premature separation of sister chromatids.
Weak mei-S332 allele.