What is the type of speciation that can occur in an instant with a change in chromosome number?

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The type of speciation that can occur in an instant with a change in chromosome number is known as sympatric speciation. This occurs when a subset of a population becomes reproductively isolated from the rest of the population due to a change in the number of chromosomes, typically through events such as polyploidy or chromosomal rearrangements. This can result in the development of a new species within a single geographic location.

What Is the Type of Speciation That Can Occur in an Instant