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 

A human somatic cell usually contains twenty-three pairs of chromosomes. Only one of these pairs will be a pair of sex chromosomes.  The genetic composition of a male child is twenty-two pairs of autosomes- any chromosome that is not involved in sex determination - and one pair of sex chromosome (XY). This can be represented as 22-XY.