How does reproductive isolation differ in sympatric modes and allopatric modes of speciation

Which of the following is NOT considered a genetic isolating mechanism?   Question 2 options:   a)  Seasonal isolation   b)  Habitat preference   c)  Behavioral isolation   d)  A, B, and C are all genetic isolating mechanisms.

Why is reprouctive isolation insuffecient to define a species?

What is a species? What types of observations do researchersanalyze when trying to identify species?

In lizard species "A" the males approach the females directly, bobbing their whole body up and down and displaying their bright blue belly patches as they do so. In lizard species "B", the males slither around the female and bob only their heads. They have no belly patches at all. The females of each species will reject the males of the other species because of these differences. This is an example of isolation. habitat and post-zygotic habitat and pre-zygotic mechanical and post-zygotic behavioral and post-zygotic isolation behavioral and pre-zygotic mechanical and pre-zygotic

If the hybrids do not become reproductively isolated from their parent species and form a new species, what are the three possible outcomes for the hybrid zone over time?

Two hundred years ago, the fly species Rhagoletis pomonella only laid its eggs on fruit of the hawthorn tree. Today, different "host races" of R. pomonella lay their eggs on hawthorns OR apples. Apples occur within the range of hawthorns, so divergence between apple flies and hawthorn flies could be the first step in sympatric speciation. Choose the evidence that would suggest that R. pomonella is currently undergoing sympatric speciation. Check ALL answers that apply.   A. Apple flies and hawthorn flies are able to form fertile hybrids.   B. Apple flies and hawthorn flies are physically indistinguishable from each other.   C. Apple flies typically mate with apple flies, and hawthorn flies typically mate with hawthorn flies.   D. Apple flies and hawthorn flies emerge from their hosts at different times of the year.

How can host speciation impact parasite speciation? What are the potential outcomes for parasites?

How does diversifying could result in sympatric speciation?

why are reproductive barriers essential in speciation?