Sex determination: humans, birds, honey bee
- Twins are born to a family that lives next door to you. The twins are a boy and a girl. Which of the following must be true? Answer: 2. They are fraternal twins. Key idea: Monozygotic twins come from one zygote and have the same sex. A boy and a girl have different... 1
- XO type of sex determination can be found in : Answer: 4. Grasshoppers XO sex determination (male has one X, female XX) is found in grasshoppers. Monkeys and Drosophila have XY males, and... 1
- Select the incorrect statement. Answer: 3. In domesticated fowls, sex of progeny depends on the type of sperm rather than egg. We look for the incorrect statement. Male fru... 1