Question

in all the cases where you have created a new species the process followed a particular pattern. complete the diagram below showing the process leading up to speciation. one population exists where organisms have different, heritable traits a shift occurs in a populations traits organisms no longer mate some organisms are no longer attracted to others natural selection sexual selection speciation

Explanation:

Speciation occurs when a population undergoes changes that lead to reproductive isolation. After natural and sexual selection act on a population with heritable traits, pre - zygotic barriers start to form. First, a shift in traits can lead to changes in behavior or appearance. Then, organisms may no longer be attracted to each other (behavioral isolation), and eventually, they no longer mate (reproductive isolation). These steps gradually lead to the formation of new species.

Answer:

From top to bottom in the blank boxes:

1. A shift occurs in a population's traits
2. Some organisms are no longer attracted to others
3. Organisms no longer mate
4. Reproductive isolation is established (this can be an over - arching concept for the last few steps leading to speciation)