Question

Most models of sympatric speciation postulate the existence of:

A. disruptive selection based on resource use.
B. geographical barriers between populations.
C. high levels of recombination between loci.
D. unequal numbers of males and females.

Answer 1

Speciation occurs through mechanisms that occur within a shared habitat (sympatric speciation). Disruptive selection based on resource use is a common model for sympatric speciation.

Step-by-step explanation:

Speciation occurs through mechanisms that occur within a shared habitat (sympatric speciation). It involves the isolation of a population in some form, which acts as a reproductive barrier between closely related species. While geographic barriers (allopatric speciation) can contribute to speciation, most models of sympatric speciation postulate the existence of disruptive selection based on resource use.