Explain sympatric and allopatric speciation, Biology

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Sympatric OR allopatric speciation

Sympatry

The development of new species within a population. Two Hebe sp living in the same location but with different chromosomal numbers could suggest the reproductive isolation of the two species by polyploidy or anueploidy.

Allopatry 

Genetic isolation of populations due to factors such as mountain building, glaciation. Eg the initial mountain building separated some species and the new environmental conditions changed the selective pressures acting on the gene pools, resulting in different species after reproductive isolation, eg H.speciosa and H. cupressoides.

 


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