When the following cross is performed: AaBb x AaBb, the expected phenotypic ratio is A. 4:4:4:4
B. 9:3:3:1
C. 6:6:2:2
D. 7:7:1:1​ ​

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.

What are 3 reasons that natural selection occurs