Biology homework help (evolution again)

Biology
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1.      As a result of human activity (such as logging), large forests are becoming fragmented into several smaller forests.

a)      How might the increasing isolation of population in these forests influence their evolution?

b)      How might the fragmentation affect the evolution of a large mammal, like a moose, compared to a small invertebrate, like a worm?

May 28th, 2015

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a)  How might the increasing isolation of population in these forests influence their evolution?

Evolution occurs when there are changes in the frequencies of alleles within a population of interbreeding organisms; for example, the allele for black color in a population of moths becoming more common. So if the resources of a forest are breaking up, and group of a species of plant or animal is naturally selected by the environment, and those surviving species interbreed and evolution would be affected that way.

b)  How might the fragmentation affect the evolution of a large mammal, like a moose, compared to a small invertebrate, like a worm?

Small horned moose might be naturally selected over small horned moose. A worm that survives in warm soil might be naturally selected over a worm that survives in cold soil. for example on the Galapagos island they birds have different beak sizes and that's because of the food supply there a bird will have a short and stumpy beak for small seeds and a big beak for big seed and the tortoises will have long necks for food that is high up or a short neck for food that is close to the ground.


                                       

May 28th, 2015

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