Convergent Evolution 3

Convergent phylogenesis is the driven by natural selection, the appliance for evolution. maturation is the change in gene frequencies deep follow out a population. This requires individuals at heart a population to have dis quasi(prenominal) phe nonypic expressions of traits. few of these variations of traits grant more(prenominal) reproductive opportunities to those that possess them; for spokesperson they may be stronger, faster, or more attractive to the reversion sex. If those traits atomic number 18 then inherited by the offspring, they lead generate more common within the population. On the some other hand, some variations of traits go away discredit/eliminate reproductive success for those that possess them and those genes will drop-off in the population, as a whole, through time. This interaction between genes and the environment results in the changes in gene frequence within a population. In geographically separate but resembling environments, evolutio n may be driven by a similar selective agent. For example, in desert ecosystems around the world, ignite is a ubiquitous, strong, selective agent that is capable of killing individuals that do not possess adaptations to its power (thus eliminating their genes from the population and favoring the spread of other genes that impart survival at high temperatures). The possible adaptations to cacoethes ar limited by physiological realities, ancestral histories, and carnal laws.

A desert rodent can not stick up by ignoring the physical law that its protoplasm will grumose at a high enough temperature. It can aestivate, gravel crepuscular/nocturnal, or resort to subterranean life. There are a limited number of adaptive solutions t! o any presumptuousness selective agent. This leads to convergence. That is, evolution by natural selection, pushing the evolutionary paths of unrelated species in similar directions. The limited solutions to selective agents much lead to convergence of a trait. Consider the similarities amongst unrelated aquatic life forms (e.g. a penguin, a fish, and a dolphin)... If you want to mishandle a full essay, order it on our website: OrderEssay.net

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