Giraffes still eat from ground and low levels and drink but they also dont eat way up high, they are said to eat a majority of heir time at shoulder level or slightly above, they also use these long necks to get them selves deeper into treees or bushes that might not be so high in the air. Science. Senior High School. Thus, natural selection is constantly influencing the evolution of species. Those with shorter necks couldn't get enough to eat, so they died off before reproducing. A Common School Book Explanation. Order Artiodactyla. Industrial melanism is a phenomenon that affected over 70 species of moths in England. According to Lamarck theory of inheritance of acquired character, the ancestor of giraffe were horse like lived in africa having enough grass & herbage to eat,when they forced to graze upon leaves of trees,thus by continuous effort of stretching the neck & forelimb increased in each … To clear up the long neck conundrum, teachers at my high school took cues from Charles Darwin’s idea of natural selection and explained that, among the ancestral population of giraffes, there were some individuals that happened to have slightly longer necks than their fellow mates. Log in. Because of reproduction, they are able to pass on this characteristic that allowed them to survive on to their offspring. 1. No one has ever challenged that idea until 1996. Those with longer necks that were able to reach the leaves and eat them survived to procreate. Before giraffes adapted to having very long necks, ... Evolution of the giraffe coincides with natural selection as overtime, the giraffes with shorter necks died out and only the giraffes with longer necks could survive and find mates to successfully reproduce with. As the Giraffes with longer necks had better adaptations to survive in the environment they were selected by natural selection for evolution. So with these long necks they are extremely versatile and it most certainly makes them able to survive with the fittest. Let's look at an example to help make natural selection clear.

How Did Lamarck Explain Why Giraffes Have Long Necks? The idea, which was presented by Charles Darwin states quite simply that giraffes selected for longer necks in order to reach the food that was higher off the ground during the dry season. It has been best studied in the peppered moth, Biston betularia. How is natural selection evolution of long necks in giraffes best explained? Home » Information » ... but the scientific debate focus on how they ended up with the extremely long necks of today’s giraffes. Obviously, those with longer necks are able to survive and therefore reproduce. DEA Picture Library/De Agostini Picture Library/Getty Images Jean Baptiste Lamarck, a French biologist who had an alternate evolutionary theory of biology to that of Charles Darwin, explained that giraffes have long necks because as they reached for leaves in high branches of trees, their necks became longer and stronger. Animals inherit their genetics from their parents or ancestors, and the environment is constantly changing. In a study that shows just how cool giraffes can get, researchers have tested a hypothesis that the giraffe's long neck actually helps regulate their body temperature. Prior to 1800, the typical moth of the species had a light pattern (see Figure 2). Because of reproduction, they are able to pass on this characteristic that allowed them to survive on to their offspring. Natural selection is a pressure that causes groups of organisms to change over time. This leads to offspring doing the same and over time, affecting the entire population of giraffes and soon evolving giraffes. Once Darwin’s Origin of Species came out, the ideas of the time changed. Join now. This leads to offspring doing the same and over time, affecting the entire population of giraffes and soon evolving giraffes. Log in. Giraffes. So, no organism is perfectly adapted to its environment. C. Giraffes with longer necks survived because they were better suited to the environment. Ask your question. Giraffe Evolution. By continually doing this, they not only stretched their own necks to be longer but then passed the growth they received in life to their offspring, giving the progeny long necks as well. They could feed on the leaves of larger trees due to their height and passed on their characteristics to their offsprings. C. Giraffes with longer necks survived because they were better suited to the environment. - 849644 1. Obviously, those with longer necks are able to survive and therefore reproduce. There are a couple of theories that resume most ideas.


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