Sympatric speciation is just as likely to occur as allopatric speciation. True F

Question

Sympatric speciation is just as likely to occur as allopatric speciation.

True

False

Geographic isolation is required for divergence and subsequent speciation.

True

False

Allopatric speciation can occur when a few individuals establish a new population in a distant place.

True

False

Polyploidy can occur in two different ways--through the joining of the genome of two different species, or the doubling of the genome of a single species.

True

False

Although speciation is usually a continuous process, near-instant speciation can occur through a chromosome doubling event known as polyploidy.

True

False

Explanation / Answer

1. Sympatric speciation is just as likely to occur as allopatric speciation. ----------> FALSE

The mechanism of adaptive radiation is known as allopatric speciation, in which one species in particular population differs from all other species (isolated species) and genetic exchange is also prevented among these species. Physical barriers such as a mountain range or long waterways may makes impossible for them to mate. So, these isolated species develop or evolve according to their habitat, because their gene modifications go in that direction (natural selection!).

Sympatric speciation is different and perhaps it does not exist. It occurs when there are no physical barriers that prevent species to mate together. The occurrence of speciation may be depends on availability of different food sources and existence of different shelters.

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