Question

identify the isolation mechanisms described using the drop-down menus.
behavioral differences in courtship or other behaviors prevent mating.
geographical species can no longer interact because they are separated by physical boundaries.
species do not interbreed because they breed at different times.
geographical species cannot physically mate due to genitalia or gametes being incompatible.
anatomical
temporal
behavioral

Explanation:

For the statement "Species do not interbreed because they breed at different times", the isolation mechanism is Temporal isolation, which is about differences in breeding time. For "Species cannot physically mate due to genitalia or gametes being incompatible", it's Anatomical isolation (related to physical/anatomical incompatibility). But focusing on the first empty dropdown: the description matches Temporal (breeding at different times).

Answer:

For the first empty dropdown (Species do not interbreed because they breed at different times): Temporal
For the second description (Species cannot physically mate due to genitalia or gametes being incompatible): Anatomical