(A) It is not an example of female heterogamety. It is an example of male heterogamety because males have two different types of gametes (XO and OO), while females have only one type (XX). (B) This statement is correct. Males produce two different types of gametes, either with (X) or without (O) an X chromosome. (C) This statement is incorrect because the total number of chromosomes is not the same in both males and females. Females have XX, and males have XO. (D) This statement is correct. All eggs bear an additional X chromosome besides the autosomes.