Sort the different barriers into their modes of reproduction isolation?

Mechanical isolation:   a snail with a flat disc like shell will not be able to mate with a snail having a conical shell.  the reproductive organs of male bush babies do not match the reproductive organs of females of otherbehavioral isolation:   the mating call of a cricket is not recognized by a cricket of other species,  the signals sent by a male firefly are not recognized by the female firefly of other species 

When a virus infects a host cell, it uses the cell's machinery to make copies of its own genetic material in a process called replication. finally, during the process of self-assembly, that protein shell and the copies of the virus's genetic material are assembled into new viruses.