Female Boule homozygotes showed no obvious defects and were fertile, producing an
average of 8.3
pups per
litter (8.3 ± 1.4, n = 12) with heterozygote males, similar to wild type or heterozygote females (7.7 ± 2.1; n = 7 for wildtype; 7.6 ± 2.4; n = 18 for heterozygotes).