The mitosis stops when chromosomes are at the maximum condenstation, it is practically metaphase but the chromosomes are not attached to the spindles so they don't form the equatorial plate.
Answer:
In species with polyploid, there are more chromosomal sets than in diploid one. Becouse there are more chromosomal structures available, events like mutation, recombination, DNA lose, are more probable to occur.
As the generations pass, the accumulation of these changes tend polyploid to speciation.
The answer is elevation :)
