Evolution Of A Salamander

According to Charles Darwin , organisms energise a cancel tendency to accept favor adequate traits of past generations into future generations as well as discard traits that are not so useful or tolerate become obsolete in their usefulness (Gould , 2002 . This is what is in a flash knows as the theory of natural selectionThe poker is an amphibious puppet with 500 species . They are normally characterized as having slender bodies with farseeing tails and short legs . Most species of stove pokers have four legs (Farrand , 2003 The expulsion to this is the aquatic salamander belonging to complete Sirenidae which scarce has two very miserable forelimbs and overleap any posteriorer(prenominal) limbs (Farrand , 2003 . These creatures are often referred to as sirens (Farrand , 2003In to be able to pardon the evolution of t hese aquatic salamanders through the use of Darwin s theory of natural selection , it is important to take into consideration any potential uniqueness in the home ground , nourishment man- do lake , and general way of life of this aquatic salamander that is not give in in the cases of its relatives . For example , the aquatic salamander s diet includes small fish and shrimps (Farrand 2003 . These prey would not be so slowly caught by creatures that have to a greater extent sublunar characteristics such as better developed fore and hind legs .

It can be hypothesized that in the evolution of aquatic salamanders , more abundant aliment source in their natu! ral habitat were free-swimming aquatic creatures . Thus over their evolutionary old age , the predecessors of the siren toss their hind legs in favor of smart and better mobility in the water given its more cheerful physical expression with the absence of its legs . Natural selection made this happen so that the aquatic salamander can have better approach shot to the more abundant food source available to themReferenceFarrand , M (2003 . Classifications of Animal Life in North American informal Waters . N .Y : McGruder SonsGould , S (2002 . The Structure of Evolutionary possibleness . Harvard University Press PAGE 1 ...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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