The infrequency of flight from an evolutionary perspective

IntroductionFlight is considered to many as a specialized and r be solve of locomotion. Flight is defined by the Oxford English lexicon as ?the action or manner of felling or sorry by dint of the air with or as with wings.? (Dudley 2000) In army to keep this paper simple, flight leave be tho confined to the organisms that can truly fly while other ?primitive? forms of flight such as gliding or parachuting will be disregarded. Only three nonchalant groups of organisms compose the population capable of flight; bats, most birds, and insects . Insects atomic progeny 18 the solo invertebrate capable of unfeigned flight. The numbers of organisms that are capable of flight have been greatly limited by the utensils of evolution. The definition of evolution is the process by which species of organisms arise from primitively life forms and undergo change everyplace time through natural selection (Sommer 2002). Evolution is seen as having two briny mechanisms that allow for changes to occur. The scratch line mechanism beingness the concept of ancestral changing or adaptation and the sec is natural selection. The number of flying species is limited by the first mechanism delinquent to the low probability that an organism will evolve and play the physiological requirements for flight (Dudley 2000).

The second mechanism limits flight because, receivable to the limitation of food sources, organisms must get down incredibly specialized and adapt to a specific niche. ancestral ChangingOrganisms with the ability to fly are greatly reduced referable to infrequency in th e evolution of flight. It is though that th! ere has only been four dissimilar time periods in which flying organism were introduced (Dudley 2000). The first being insects and the last being bats. These traits for flying were introduced by a species or a group of species. These organisms were exposed to an immaterial factor that... If you trust to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper