Question

which of the following would not result in reproductive isolation? multiple choice two subspecies of mottled rock rattlesnakes have very different coloration but they can produce viable offspring when the mate. two populations of crickets are indistinguishable in physical features, but the females in each group only come to the different song of their males. fruit flies on one hawaiian island live for hundreds of generations and do not come in contact with fruit flies on another island except when blown there by rare tropical storms. one brood of the seventeen-year cicada emerged in 1987 (and will do so every 17 years) and lives a few months as adults; another brood emerged in 1992 (and will do so every 17 years); the larvae of both feed side-by-side on tree roots. a lion and a tiger mate in the artificial confines of a zoo but the offspring is infertile.

Explanation:

To determine which option does NOT result in reproductive isolation, we analyze each:

• Option 1: Different coloration but viable offspring means no reproductive isolation (they can reproduce successfully).
• Option 2: Cricket populations with mating - call - based isolation: females only respond to their group's song, so they don't interbreed (reproductive isolation).
• Option 3: Fruit flies on different islands (except rare storms) don't interact, so no interbreeding (reproductive isolation).
• Option 4: Cicada broods emerge at different times, so no interbreeding (reproductive isolation).
• Option 5: Lion - tiger offspring is infertile, so they can't reproduce successfully (reproductive isolation).

Answer:

The option where two subspecies of Mottled Rock Rattlesnakes have very different coloration but they can produce viable offspring when the mate (the first option in the list of choices).