DIC (Differential Interference Contrast/Normaski) images of a C. elegans' embryonic development from the first cell division to a 2-fold stage embryo. Courtesy of the C. elegans Worm Art Show.
A temperature-sensitive mutant of the zyg gene. zyg-1(oj7), zyg-1(b1), zyg-1(it4), zyg-1(it37) are alleles of zyg-1 gene, each one resulting in temperature sensitive mutations. C. elegans II, p.1046