It has been best studied in the peppered moth, Biston betularia. At up to 5.8 metres tall (19 feet), giraffes are the tallest animal on land, thanks to their unusually long necks.
C. Giraffes with longer necks survived because they were better suited to the environment.
There are a couple of theories that resume most ideas. Log in. 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 … Because of reproduction, they are able to pass on this characteristic that allowed them to survive on to their offspring. 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.
Join now. 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. Join now. Ask your question. 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. Obviously, those with longer necks are able to survive and therefore reproduce. Giraffe Evolution. So, no organism is perfectly adapted to its environment. How is natural selection in the evolution of long necks in giraffes best explained? We need you to answer this question! The accepted theory on giraffe evolution is that the giraffes with the longest necks passed on their genes through natural selection, and that it took … 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. 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. 1. Animals inherit their genetics from their parents or ancestors, and the environment is constantly changing. This leads to offspring doing the same and over time, affecting the entire population of giraffes and soon evolving giraffes.
Order Artiodactyla. Industrial melanism is a phenomenon that affected over 70 species of moths in England. 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. Natural selection is a pressure that causes groups of organisms to change over time.
5 points How is natural selection in the evolution of long necks in girrafes best explained? So with these long necks they are extremely versatile and it most certainly makes them able to survive with the fittest. Prior to 1800, the typical moth of the species had a light pattern (see Figure 2). 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. Senior High School. Science. Dark colored or melanic moths were rare and were therefore collectors' items. How is natural selection in the evolution of long necks in girrafes best explained? Evidence of Natural Selection. Once Darwin’s Origin of Species came out, the ideas of the time changed. C. Giraffes with longer necks survived because they were better suited to the environment. Home » Information » ... but the scientific debate focus on how they ended up with the extremely long necks of today’s giraffes. No one has ever challenged that idea until 1996. The Evolution of the Giraffe Neck Throughout time, one theory has remained constant in terms of why giraffes developed longer necks. Because of reproduction, they are able to pass on this characteristic that allowed them to survive on to their offspring. Obviously, those with longer necks are able to survive and therefore reproduce. Those with longer necks that were able to reach the leaves and eat them survived to procreate. How is natural selection evolution of long necks in giraffes best explained?
This leads to offspring doing the same and over time, affecting the entire population of giraffes and soon evolving giraffes. The long neck of giraffe is an adaptation, this helps the giraffe to survive for millions of years.
Giraffes. How Did Lamarck Explain Why Giraffes Have Long Necks? 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. A Common School Book Explanation.
Thus, natural selection is constantly influencing the evolution of species.