A chromosomal survey of four species of gekkonid lizards.

The karyotypes of the gekkonids were serially graded from the largest to the smallest in the diploid complement. The majority of the chromosomes were subtelocentric. The diploid number was 2n = 38 in Gekko gecko and 2n = 40 in the three species of the genus Hemidactylus examined. A comparative morphometric analysis of the diploid sets of these four members suggested a cytotaxonomic relationship and a possible mode of speciation in this group of reptiles.