Kype and/or characteristics that could be of importance in inter- and intra-sexual evaluations of individual quality. The size of the kype is believed to determine male spawning frequency. The extinct sabertooth salmon, "Oncorhynchus rastrosus", was first named for its prominent premaxillary dentition. It possesses an enormous conical tooth on each premaxilla. There is no visible kype on the dentary, implying a different strategy for forming mate dominance. Kype A kype is a hook-like secondary sex characteristic which develops at the distal tip of the lower jaw in some male salmonids prior to the spawning season. The structure usually develops in the
The Different Forms of Flowers on Plants of the Same Species The Different Forms of Flowers on Plants of the Same Species The Different Forms of Flowers on Plants of the Same Species is a book by Charles Darwin first published in 1877. It is the fifth of his six books devoted solely to the study of plants (excluding "The Variation of Animals and Plants under Domestication"). These writings contributed to Darwin's pursuit of evidence that would support his theory of natural selection. There were only two more books to follow: "The Power of Movement in Plants" (1880) and "The Formation of Vegetable Mould through the Action of Worms" (1881). He