Instructions: drag each tile to the correct location on the table. sort the different barriers into their modes of reproductive isolation.

1. The following will appear under mechanical isolation:
a. A snail with a flat disc like shell will not be able to mate with a snail having a conical shell.
b. The reproductive organs of  male bush babies do not match with the reproductive organs of females of other bush baby species.
Mechanical isolation is said to occur when mating between two closely related species are hindered as a result of incompatible genitals.

B. These two statements signify behavioral isolation.
a. The mating call of a cricket is not recognized a cricket of other specie.
b. The signal sent by a male firefly are not recognized by the female firefly of other species.
 Behavioral isolation is said to occur when mating between two species are hindered as a result of differences in courtship behavior.