A) Drugs which inhibit microtubule assembly are administered for some medical conditions. What will take place to the cell as a result? For what kind of conditions would such a drug be provided?
B) Colchicine is a chemical used to treat dividing plant cells to make sure that the chromosomes of cells undergoing mitosis will be visible. Explain how does colchicine achieve this result? Describe the natural source of colchicines.
C) Numerous conditions genetically predispose individuals to develop cancer; however these individuals contain no unusual chromosome(s). Does the lack of a visible chromosome defect make it unlikely that cancers in these individuals are caused by changes in the DNA? Describe your answer.