Answer:
Melanin
Explanation:
Some races that are genetically programmed in such a way that the color changes according to the ambient temperature, as is the case of the Siamese cat.
Siamese cats has a gene that produces melanin (gives hair color) depending on body temperature.
This gene stops painting color when the average temperature of cats is exceeded. This absence of color (that is, white cat) causes several curiosities to occur:
1) Siamese cats that are subjected to higher temperatures, for example in summer, can develop a partial albinism.
2) Siamese babies are usually born very white, because in the mother's womb the temperature is warm. As they come in contact with the outside, the gene begins to color their fur.
3) Cat's body is colder around the ears, legs and tail. For that reason they are usually the most colored areas of the Siamese.
Arteries are blood carrying vessels which have thick, elastic, muscular walls, have no valves and in which blood flows under high pressure. The make up of arteries is unique to their function of transporting blood under high pressure.
All arteries carry oxygenated blood from the heart to all other parts of the body, with the exception of the pulmonary artery which carries de-oxygenated blood from the heart to the lungs. It is the only artery that transports blood which has not been oxygenated.
there rate of reproutuction is very fast
Answer:
Cell membrane
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