Geographical Isolation is the mechanism that might have led to the appearance of the Hawaiian honeycreeper.
Geographical Isolation is the term used that refers to a population of animals, plants, or other organisms that are separated and unable to exchange genetic materials with other organism of the same species.
Geographical Isolation may be a result of coincidence or accident.
Here are some factors of Geographical Isolation:
1) Isolation by barriers
2) Isolation by distance
3) Isolation after an Event
4) Isolation by separation
Sorrowful mood is described a sad feeling, especially when it involves grief or loss. For example- the loss of a thing one loves the most, the loss of a loved family member etc.
So, here in these lines of the poetry, the last line describes the sorrowful mood of the poet.
"branches droop as gray skies loom" .
Answer:
Yes...This is an example of speciation by natural selection
Explanation:
As we know that natural selection always promote those evolutionary changes that are necessary. Changes that happen in chromosome number always promote with a specie that is closely related to the parent specie and produce fertile off-springs. These new generations are most adaptable and can survive in the environment more efficiently than the previous ones.
Additionally, other than natural selection, speciation can also happen as a result of random mutations, genetic drift and by means of artificial selection as well. But the natural likelihood of all these is probably low as compared to that of natural selection.
Answer:
well you could be aleck and say they are both cells
"Founding population arrives, biogeographic isolation occurs, genetic changes occur, reproductive isolation results" (Letter A)
