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In contrast to their earth-bound relatives, tortoises, sea turtles do not have the ability to retract their heads into their shells. Their plastron, which is the bony plate making up the underside of a turtle or tortoise's shell, is comparably more reduced from other turtle species and is connected to the top part of the shell by ligaments without a hinge separating the pectoral and abdominal ...
Three possibilities have arisen from their unique characteristics: agassizii is a separate species from C. mydas, it is a subspecies of green sea turtle, or it is simply a color mutation. [59] These facts have led to the debate over binomial separation however due to the significance of the DNA testing results there have been no distinctions ...
The four pigments in a bird's cone cells (in this example, estrildid finches) extend the range of color vision into the ultraviolet. [1]Tetrachromacy (from Greek tetra, meaning "four" and chroma, meaning "color") is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cell in the eye.
The southern South Asia region has recorded 89 deaths from (primarily hawksbill and green) sea turtle poisoning from 1840 to 1983, mainly in Tamil Nadu and northern and western Sri Lanka. [ 2 ] Chelonitoxism can be deadly, and supportive treatment is the only treatment available; there is no known antidote .
BCM results from mutations in a single red or red–green hybrid opsin gene, mutations in both the red and the green opsin genes or deletions within the adjacent LCR (locus control region) on the X chromosome. [3] Green cone monochromacy (GCM), also known as M-cone monochromacy, is a condition where the blue and red cones are absent in the ...
Genus Caretta - loggerhead sea turtle; Genus Chelonia - green sea turtle; Genus Eretmochelys - hawksbill sea turtle; Genus Lepidochelys - ridley sea turtle; Genus Natator - flatback sea turtle; Family Dermochelyidae [6] Genus Dermochelys - leatherback sea turtle; Superfamily Kinosternoidea. Family Dermatemydidae [6] Genus Dermatemys - Central ...
Phenotypic plasticity refers to some of the changes in an organism's behavior, morphology and physiology in response to a unique environment. [1] [2] Fundamental to the way in which organisms cope with environmental variation, phenotypic plasticity encompasses all types of environmentally induced changes (e.g. morphological, physiological, behavioural, phenological) that may or may not be ...
Eye color is an example of a (physical) phenotypic trait. A phenotypic trait, [1] [2] simply trait, or character state [3] [4] is a distinct variant of a phenotypic characteristic of an organism; it may be either inherited or determined environmentally, but typically occurs as a combination of the two. [5]