David Kingsley et al drew parallels between the evolution of human skin pigmentation and this organism's pigmentation by changes in cis-regulation of the Kit ligand.
David Kingsley et al drew parallels between the evolution of human skin pigmentation and this organism's pigmentation by changes in cis-regulation of the Kit ligand. Freshwater populations of this organism exhibit loss of pelvic spines and body armor due to the reduced transcription of the Pitx1 gene. Nova Scotia populations of this organism build nests out of filamentous algae rather than digging pits. Those populations of this organism have been designated "white" and do not give parental care to their young. Males of this species secrete a glycoprotein called spiggin to create their nests. This species' scientific name is Gasterosteus aculeatus. In one study, the male species of this organism responded consistently and attacked a model with a red belly, but in contrast, courted a model with a swollen belly. Niko Tinbergen studied fixed action patterns in, for 10 points, what organism, a fish characterized by three dorsal spines?
David Kingsley et al drew parallels between the evolution of human skin pigmentation and this organism's pigmentation by changes in cis-regulation of the Kit ligand.
three-spined stickleback (accept  Gasterosteus aculeatus before mention)