4. (Science: entomology, zoology) The horny inferior surface of the lingua of certain insects. One of the small, spiniform scales found on the front edge of the dorsal and caudal fins of many ganoid fishes.
Results from our forum
... we see at mitosis (when the DNA is highly condensed into its typical X shape). The two chromatids in a chromosome are clamped together (ie, the fulcrum of the X) at the centromere. So: Nucleoside = sugar + base Nucleotide = sugar + base + phosphate Single strand of DNA = sequence of nucleotides ...
See entire post