Observe the Mendelian laws of genetics by stimulating genetic crosses using factors for single gene inheritance as well as for 2 different factors. Children have the opportunity to record experimental crosses of phenotype and genotyperatios and compare these with expected mathematical ratios. Shipped directly from the manufacturer. Not available with rush shipping. Delivery time estimated at 10-14 days or less. Gift wrap not available. Information on how to place your order by fax or by telephone. Grades 7-12. Product Number: AMRPROB1