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Sea snake scales differ from that of terrestrial snakes because they are rugose and wrinkled. Male sea snakes scale rugosity is more developed than that of the female snakes. The male turtle headed sea snake, Emydocephalus annulatus, provides an interesting case study because of their unique scales. [35]
The snake somitogenesis clock operates at a frequency 4 times that of a mouse (after correction for developmental time), creating more somites, and therefore creating more vertebrae. [95] This difference in clock speed is believed to be caused by differences in Lunatic fringe gene expression, a gene involved in the somitogenesis clock. [97]
The hemipenis is the intromittent organ of Squamata, [4] which is the second largest order of vertebrates with over 9,000 species distributed around the world. They differ from the intromittent organs of most other amniotes such as mammals, archosaurs and turtles that have a single genital tubercle, as squamates have the paired genitalia remaining separate. [5]
Phenotypic differences between sexes are evident even in cultured cells from tissues. [129] For example, female muscle-derived stem cells have a better muscle regeneration efficiency than male ones. [130] There are reports of several metabolic differences between male and female cells [131] and they also respond to stress differently. [132]
The primary difference between antlers and horns is that the former are seasonal while the latter are permanent. Antlers are the fastest-growing tissue on the planet, expanding at a rate of up to ...
Females are larger than males in most snakes, and green anacondas have one of the most extreme size differences, where females average roughly 32 kg (70 lb) and males average only around 7 kg (15 lb). [23] [24] This size difference has several benefits for both sexes.
Aesculapian snake’s behaviour is ‘unusual’ compared to native species Invasive 2m-long snake breeding inside walls and attics across UK, scientists warn Skip to main content
The common krait (Bungarus caeruleus) is a venomous snake species belonging to the genus Bungarus in the Elapidae family. It is native to the Indian subcontinent and is responsible for the majority of snakebites affecting humans in India , Pakistan , and Bangladesh .