Changing Ideas in Science

Changing Ideas in Science The Platypus Enigma The duckbilled duck-billed duck-billed platypus is a mammal that has many features that separates it from former(a) mammals - it lays eggs, there is an absence of h anest teeth and mammary glands. It also has fur like other(a) mammals, but has a beak similar to the bill of a duck, webbed feet and a tail like a beaver. The platypus is a very curious creature to the scientific railroad tie and has created debate to where it is a mammal and how it should be categorize. During the past cc years, scientists have been interested and have had changing ideas about the platypus. In 1978 the first specimen on platypus was sent to Britain and British naturalist George Shaw, studied the platypus and suspected that the specimen he had studied was a hoax. Scientists at that time thought that soulfulness had stitched to take downher parts from various animals to create this unitary creature. However, close and detail examination showed th at the specimen was indeed real. by and by it was established that the platypus was real, scientist were now faced with the problem of placing it into a classification group. They didnt know whether it was a mammal because of its fur, a reptilian because of its webbed feet or a duck because it had a duck-like bill. From 1800-1830s it was classified as all three groups.

In 1836, while circuit Australia on the HMS Beagle, Charles Darwin watch overd the platypus and questioned whether it mogul have ii creators. This contributed to his idea of evolution. Until 1884, the reproductive method of the platypus was unknown. In 1883 William Caldwell arrived i! n Australia and spent his time studying the platypus. With the help of the Aboriginal people, Caldwell observe an egg-laying female platypus. The platypus reproductive structures are very more(prenominal) than like reptiles. In 1904 the Scientific American reported that petulant mammals do not possess teeth when adults. This meant that the platypus talent be a mammal. Until 1973, it was thought that platypuses could not regulate...If you want to move a full essay, order it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay