The given figure shows a cell. Study the figure and answer the questions that follows.

(a) Identify the stage of cell cycle depicted by the cell.

(b) Write any two characteristic of this phase.

(c) Identify A and B.

Explain why generally only the male child suffers from colour blindness and not the female?

Which gland secretes thyroxine? What will happen if the secretion of thyroxine is insufficient?

Name two types of passive transport.