Difference between male heterogamety and female heterogamety
Heterogamety means different sex gametes.
Male heterogamety includes human males having XY sex chromosomes and males of some insects, such as grasshopper and bugs, having XO sex chromosomes.
Female heterogamety includes females of some species of birds, fishes and insects. Femalesof butterfly and moth consist ZO sex chromosomes, while females of fish, reptiles and birds consist ZW sex chromosomes.