Zebra Mules
Formation of new species Here you see 6 species of cat that originated from a common ancestor. But . . . What exactly is a species? 1 2 3 4 5 6. Are they from the same species, these two birds: No. Why? At first glance there are differences between these two individuals bill shape, plumage colors, etc. . Two people like this (male and female) CAN NOT interbreed. Scientific name Common name Sparrow Passer domesticus Each species has a scientific name, universal and unique in all countries. How do you name the species?. Common name: bison in America sometimes called "buffalo" Common Name Scientific name Scientific name Buffalo Bison bonasus Syncerus caffer scientists avoid confusion Names How are they named the species?. Sometimes there is a sexual dimorphism, ie the male and female samples different color, size and shape of the body or certain organs . . . . These monkeys, but not enough, belong to the same species (intraspecific variability is very high) Sometimes the opposite occurs: animals or plants that look alike at first glance, actually belong to different species, as for example with zebras . . . . It is necessary to study thoroughly the animal populations to see if it is a species or several. For example, after centuries in Africa thinking that there was only one species of zebra, is known from a few years ago that there are actually three: The resemblance is so great because they are so related. That means that the common ancestor of the three species is relatively close in time. Equus quagga Equus zebra Equus grevyi. This is not a whim of the biologists. They are different species because they do not play each other giving each child fertility in some zoos have been able to play different species of zebras. But the resulting children, although they live normally, are sterile Equus quagga Equus zebra mules Equus grevyi. Since ancient times is known to also be played two different species: horse and donkey. The mule is a hybrid resulting from cross between donkey and horse or between horses and donkeys. zebra mules can not reproduce because they are sterile animals of the genus Equus Mula (a hybrid donkey-horse) species originate when they stop playing with each other. Adopt colors, shapes and behaviors that prevent them from different species interbreed with horses. Adaptation to the environment generates a series of small, incremental changes in a population that, over thousands of years, can constitute a new species. The formation of new species from other existing, or speciation, a phenomenon that is primarily responsible for the diversity of living organisms. Formation of new species How is a new species? The okapi is a short-necked giraffes living in the jungles of Africa the two species: giraffe and okapi, can not play each other. At first the people of the same species are separated by a physical barrier (a sea, a mountain, a desert . . . ). After several generations, it becomes impossible altogether reproduction between different species have been trained to intervene also adaptation to the environment by natural selection, there must be also the isolation of a population that, gradually evolve and differentiate from other the original species comes to genuine new species. SlideShare is the world's largest community for sharing presentations. Upload and share on blogs, Twitter, Facebook or LinkedIn. Over 60 million people use SlideShare Every month for research, sharing ideas, Connecting with Others, and Generating business leads. Also Supports SlideShare documents, PDFs, and videos. . . .
