Zebra strips white or black

non nude top50
justin josh xvideo gay porn

By Luis Villazon. Most zebras have dark skin beneath their fur but the stripes do not consist of white fur with gaps in between — they have both black and white fur. All the fur grows from follicles that contain the pigment-generating melanocyte cells.

college humor ass

New research suggests that stripes help zebras evade biting flies and the deadly diseases they carry. Hear from the scientists who led the study. Image via Tim Caro.

asian broccoli recipes
gay jews in montreal

They are sturdy, spirited animals that are a study in contrasts: willful and playful, social and standoffish, resilient and vulnerable. Their life in a herd can be complex, yet they also find safety in numbers. Zebras are equids, members of the horse family.

free food fuck porn

Genetics determine the variety of stripes in zebras. While the specific processing of determining this striping pattern isn't known, it has something to do with selective pigmentation. Melanocyte skin cells produce the pigments that color the fur. Certain chemical messengers regulate which melanocytes deliver their pigment to the zebra [source: Camazine ].

shoving stuff in pussy

Do zebra stripes have some kind of adaptive function? Intuitively, the answer has to be yes. But what is it?

asian but sex
heather from busty amatuers
shawna sand porn

All rights reserved. A leopard may not be able to change its spots, but some zebras change their stripes. Zebras in warmer places have more stripes, a new study shows, which might help answer an age-old question: Why stripes?

comic strip character

Question Asked by tim. Last updated Sep 18

huge tits on a small girl
hetai lesbos

Why do zebras have stripes? For a long time, researchers assumed they were to confuse predators while zebras stood in herds. But increasingly, scientists are reaching a different conclusion: Stripes protect zebras from biting insects. A new study helps explain exactly how.

used 1984 playboy lingerie magazine
algebra fourth edition k elayn martin gay

New research published in the Journal of Natural History indicates that zebras' stripes are used to control body temperature after all—and reveals for the first time a new mechanism for how this may be achieved. The authors argue it is the special way zebras sweat to cool down and the small-scale convection currents created between the stripes which aid evaporation, while the previously unrecorded ability of zebras to erect their black stripes is a further aid to heat loss. These three elements are key to understanding how the zebras' unique patterning helps them manage their temperature in the heat.

vaginal fisting and buggary

All the species inhabit grasslands, savannas, woodlands, thorny scrub lands, mountains and coastal hills. The Grevy's and mountain breeds are both considered to be endangered species. The common plains species is about 50—52 inches 1. Zebras are known to live in herds, and to communicate via audio cues.

Comments

  • Micah 5 days ago

    love this bitch

  • Lucas 26 days ago

    I Pm'd for name but totally screwed it up and just sent the name of the vid. Sorry. blu ray porno

  • Mohamed 5 days ago

    Wht the name of another girl