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Zebras are white stripes that grow on a black background, and more strictly speaking, they are already black and white when they are embryonic.
In the environment of Africa, it is difficult for white ** to survive. Zebras prefer dry, pot-dense grasslands and are social animals that prefer to eat grass. Zebras evolved from proto-horses tens of thousands of years ago, and were first concentrated in the semi-dry grasslands of Ethiopia and northern Kenya, and then gradually spread in various countries after being domesticated and forcibly migrated.
In an environment like Africa, where the weather is hot and dry, even white animals can turn black when exposed to the sun. Nowadays, some white animals have changed their color from black to white because of mutation.
What's more, white is very conspicuous in Africa, and it is not conducive to the survival of animals. On the injured Banma, if you look at its fur, you can see that its bottom is black. The two colors of melanin and melanoid in zebra** are interspersed with each other, which is also due to the melanin precipitation formed by sun exposure.
Zebra is more special, although melanin is suppressed, it is also to adapt to changes in the environment. The spacing of the zebra's black stripes was originally very thin, and at that time it was completely black and white, and the black area was relatively large. After several evolutions, the melanin was suppressed in some parts of the zebra, and then the distance between the black and white stripes widened, and secondary stripes appeared.
This change is also to be more in line with the local environmental characteristics, which is conducive to the zebra coming out in the morning and dusk, and the hazy is not noticeable at all. Especially when encountering danger, when multiple zebras are moving at the same time, there will be a feeling of multiple *** in motion, which can confuse the vision of natural enemies, so that natural enemies can't tell where their heads and feet are.
This characteristic of zebras can also avoid mosquito bites. Now it has been found that zebras have developed stripes at the time of embryonic development, and even the tail can produce stripes after the fourth week of embryonic development, and then after birth, the stripes change in different shapes.
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Zebras should have white stripes on a black background, because as far as the living environment of Africa is concerned, it is not conducive to the survival of white creatures, so zebras should have a black background, and the appearance of white stripes is because the zebra's adaptability to the living environment is enhanced, resulting in the appearance of secondary stripes, that is, white stripes.
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None of them, the zebra's ** is black and white, so the hair is black and white.
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Zebras have black stripes on a white background, and although the zebra looks black and white from the back, the zebra's belly is white, so the overall color is black stripes on a white background.
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Is a zebra white striped on a black background? Or black stripes on white? The secret of the long stripes of animals.
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White stripes on a black background. Zebras are black**, black-haired and white-haired animals. In addition to the common black and white stripes, some species of zebras have brown "shadow stripes" between black and white stripes, such as the Bryde's zebra (Equus quagga burchelli), a subspecies of the plains zebra.
Although the black and white markings of zebras are very eye-catching to the human eye, for predators with only black and white vision, black and white stripes help to break up the outer contour and make it difficult for predators to lock onto the individual, and there is more evidence that the black and white markings can make pests such as tsetse flies less parasitic on them.
The black and white stripes also regulate the body's temperature and form a natural air conditioning system, because white reflects light and cools down, while black absorbs light and heats up. Zebra markings are mainly vertical on the head, neck, and front half of the body, while the markings on the back half of the body and feet are horizontal.
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Is a zebra white striped on a black background? Or black stripes on white? The secret of the long stripes of animals.
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Zebra is a black horse with white stripes Scientists shaved all the zebra hair and found that it was ** black!
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Black stripes on a white background The extinct white zebra can prove that only half of the white zebra has black markings 2
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In my memory, it's black stripes on a white background.
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White spots on a black background. Although it seems that the white part is relatively large, in fact, the zebra is pure black in the early stage of embryonic development, and the white spots appear in the later stage of embryonic development, so the zebra is white spots on a black background.
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When mothers lead their children across the street, they will tell their children to take the zebra crossing, which is called a zebra crossing because the black and white stripes resemble the texture of a zebra. So, have you ever wondered why zebras are black and white, whether they have white fur on a black background or black fur on a white background?
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Black spots on a white background, you can see it when you look closer.
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White stripes on a black background. Although zebras were mistaken for white** and black stripes in the past, in fact, zebras are black**, black-haired and white-haired animals. In addition to the common black and white stripes, some species of zebras have brown "shadow stripes" between black and white stripes, such as the Bryde's zebra (Equus quagga burchelli), a subspecies of the plains zebra.
The texture of each zebra is also not exactly the same, so that they can recognize the identity of their zebra. The markings also have the effect of attracting the attention of the opposite sex, and the texture of the injured zebra can be a bit messy, so they can refer to the markings of the mate to judge the health of the other person when choosing a mate.
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