XX-XO type of sex determination and XX-XY type of sex determination are examples of

The correct option is A male heterogamety
(i) XX-XO type, for example in grasshoppers, males have AA+XO and females have AA+XX chromosomes. AA represents autosomes which are common in all somatic cells. XX and XO and XX are allosomes that determine the sex.
Gametes from female’s AA+XX will of one type: (A+X), homogametic
Gametes from male’s AA+XO will be of two types: (A+X) and (A+O), heterogametic.
(ii) XX-XY type, for example in humans, males have AA+XY(44+XY) and females have AA+XX (44+XX) chromosomes in their diploid cells.
Gametes from males (44+XY) will be of two types: (22+X) and (22+Y), heterogametic.
Gametes from females (44+XX) will be of one type: (22+X), homogametic.
This type of sex determination is an example of male heterogamety.