dihybrid cross - hybridization using two traits with two alleles each. monohybrid cross - hybridization using a single trait with two alleles (as in Mendel's experiments with garden peas) reciprocal cross, reciprocal - hybridization involving a pair of crosses that reverse the sexes associated with each genotype.
From Wikipedia, the free encyclopedia. For other uses, see Red ribbon (disambiguation) . The red ribbon, as an awareness ribbon colored red, is used as the symbol for the prevention of abusive drug use and drunk driving and also solidarity of people living with HIV / AIDS.Contents.he red ribbon, as an awareness ribbon colored red, is used as the symbol for the prevention of abusive drug use and drunk driving and also solidarity of people living with HIV / AIDS. Contents.
Red represents the blood shed by the Patriots who fought for independence. The colors of the US flag were taken from the colors of the British flag. At the time the flag was designed, the red did not mean anything in particular. Officially the red in the flag does not stand for anything.