Microtubules are long, hollow protein cylinder that form a rigid skeleton for the cell

Computer simulations are sometimes used to demonstrate the outcome of monohybrid fruit fly crosses, where a student can run generation after generation of fruit flies with 100 offspring produced each generation, half male and half female, and a 3-to-1 phenotype ratio (or 75 to 25) in the f1 generation. compared with real genetics results,