Double heterozygotes of
pop-1(
q645)/+ and
sys-1(qDf14)/+ have 55% of distal tip cells missing, compared to 1% in
pop-1(
q645)/+ animals and 2% in
sys-1(qDf14)/+ animals. "A marked genetic interaction was seen between
sys-1 and
pop-1: +
sys-1(
q544)/pop-1
(q645) + double heterozygotes resulted in a 21% loss of DTCs (Table 3), +
sys-1(
q544)/pop-1
(q624) + were missing 15% of their DTCs (n = 68), and qDf14 in trans to
pop-1(
q645) had a 55% DTC loss (Table 3)."