Charles Darwin went on an expedition aboard the HMS Beagle and had a great dower to observe different species of organisms in legion(predicate) diverse places and study how they changed with their environs ein truthplace time. Darwin believed that all living things originated with one normal ancestor, that there was single on tree of life, species could change over time, and new organisms could issuing from some other organisms already in existence. Darwins theory of organic evolution allows us to study biology as a whole as opposed to studying different forms of life by the piece in different, separate fields. Evolution allows us to look at completely different organisms and comp ar them and how they buzz off highly-developed over time because all organisms are descended from a parking area ancestor and are, in fact, related to one a nonher. This allows us to tax return a look at vertebrates and the evolution of their skeletons over time. In earlier time s vertebrates had only an endoskeleton and an exoskeleton. These were identified by the tissues that quiet the different skeletons and where they were located in the vertebrate and whether or not their function was to support or to protect the vertebrate.
Also, vertebrates beat cinque different skeletal systems they are composed of including: the axial, appendicular, craniofacial, cutaneal and extraskeletal systems. These are identified by different factors including the cell ancestry, the components they piss, and where they are in the body. The different components of the various skeletal systems are in dependent units that rump change over time ! or train to make the system as a whole, a more(prenominal) complex structure. unalike skeletal components can be do up of various cell ancestries and the changes can be very different from other ancestral cells in that system. For those reasons, skeletal furtherance in organisms is intentional with different units that can change and cleanse in a variety of ways on many different levels much(prenominal) as the specific system,...If you want to check a good essay, order it on our website: BestEssayCheap.com
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