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Why might a geographic barrier such as a large river cause th formation of a new species of small rodents but not a new species of birds?
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Why might a geographic barrier such as a large river cause the formation of a new species of small rodents but not a new species of birds?
Geographic barrier is the barrier which cease the movement of any organism through it. Now as rodents which are not able to cross the river stay apart and develop into different species whereas the as the birds are able to fly the can cross this barrier and can cross with the birds of other part which did not lead the formation of new species of birds.
Is geographic barriers guarantee the formation of new species?
Yes, geographic barriers guarantee the formation of new species.
How can islation lead to formation of new species?
Allopatric Speciation (geographic isolation) can lead to the formation of a new species because the population is split in two smaller populations by a physical barrier (river, canyon, mountain...).
A factor that is necessary for the formation of a new species?
different mating patterns
Why might a goegraphic barrier such as a large river cause the formation of a new species of small rodents but not a new species of birds?
It might also be instrumental in the evolution of a new species of bird. With birds, however, the impact of such a barrier will usually be much smaller, as birds can more easily cross such barriers and therefore maintain a high interbreeding frequency. The decline of interbreeding frequency is what causes subpopulations to diverge, sometimes culminating in speciation.
Does geographic isolation contribute to evolution-?
A geographic barrier eg mountain range, river, ocean, desert, can split a species into two populations which can no longer mix with each other. By splitting up a species into two separate populations a geographic barrier can lead to the formation of a new species. The two separate populations start to develop in isolation from each other. Different mutations will occur in the two populations and natural selection will adapt them to the slightly different conditions in the two areas. Given enough time the two populations will become so different that if they are brought together again they will no longer be able to interbreed ie they will have become two different species. This is called allopatric speciation.
How many percent of rodents are mammals?
About forty percent of mammal species are rodents. Since there are about 5,400 mammal species, there are over 2,000 species of rodents.
Do mice attract rodents?
Mice are rodents. There is no evidence that they can attract other species of rodents.
What species are hamsters?
Rodents
What type of isolating mechanism was important in the formation of Galapagos finch species?
Geographic IsolationSpeciation in the Galápagos finches occurred by founding of new populations, geographic isolation, gene pool changes, reproductive isolation, and ecological competition.
What type of isolation mechanism was important in the formation of Galapagos finches species?
Geographic IsolationSpeciation in the Galápagos finches occurred by founding of new populations, geographic isolation, gene pool changes, reproductive isolation, and ecological competition.
How a geographic barrier separating an animal population into two groups could produce two new species over a long period of time?
Darwins theory of Natural Selection.
