Male Vs Female #Who Wins

Which type of sex determination mechanism is followed in birds? a) Female XX and Male XO b) Female ZW and Male ZZ c) Female XY and Male XY d) No Mechanism occur in birds

Rs. 180 are divided into 66 male and female. The ratio of total amount given to male and female is 5 : 4. The ratio of amount given to one male and female is 3 : 2.Find the number of males and females.

The abdomen in male and females consists of

In pinus, male and female cones occur on

Fusion of male and female gamele in Plasmodium occur in

Male XX and female XY sometime occur due to :