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Giraffes as we know are native to Africa, but more than 20-25 million years ago their ancestors roamed along Europe and Asia. There aren’t many fossils of them, but some information has allowed scientists to come up with some evolution theories. These ancient giraffes looked like deer and were much shorter than what we know of them today, but how did they ended up with the extremely long necks? There are a couple of theories. Some believe it occurred slowly, over a long time due to the trees in the areas where they lived that trying to reach them got giraffes taller in the process. They are even-toed ungulates which are those animals with hooves like deer, pigs, hippos, among others that share this trait. There are three suborders within the Artiodactyla order: Tylopoda which includes camels and llamas; Suina a suborder composed by pigs and peccaries and finally the clade Cetruminantia which includes whales, hippos, and ruminants the suborder to which giraffes belong. According to scientific studies, they evolved in the Miocene from ungulate animals occupying regions of Africa and Eurasia, about 25 million years ago. Eventually, they became extinct, but a new species emerged.The long neck is a later adaptation since such ancestors had short necks and were smaller resembling more of a okapi than an actual giraffe. Fossils of these species such as the Giraffokeryx, have short necks, horns on one side of the head and behind. By their placement this suggested the possibility that the males wrestled with lateral head movements and not with the long neck like the current giraffe.

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Organisms during embryological development do through their evolutionary stages.

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Differences in molecular sililarities can be used to determine degrees of relationship between two different species.

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Parts are similar in structure but have different uses in different species.

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Structures in some organisms that have no use in one species are useful for others.

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Lucky vs. Unluck

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Divergent, Parallel and Convergent Evolution

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Divergent, Parallel and Convergent Evolution

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Divergent- Differences
Parallel- Similar traits
Convergent- Organisms not related

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Seasonal movement of animals from one place to another.

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Errors in DNA code during cellular reproduction.

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Passing on of genetic information, influenced by male competition and female choice.

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Process whereby organisms adapt to their environment to survive and reproduce.

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Variation
Inheritance
Selection
Time

Vist is an acronym used to describe a species evolution span.

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Explain the Evolution of a Particular Animal

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Explain the Evolution of a Particular Animal