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.
Black Awareness Ribbons - Causes and Meanings. 1  9/11 - This ribbon is a sign of mourning for those lost in the September 11th (9/11) attack. 2  Melanoma awareness. 3  Mourning and remembrance of the Virginia Tech massacre. 4  Narcolepsy. 5  Primary Biliary Cirrhosis (Now known as Primary Biliary Cholangitis) 6  Sleep Apnea. 7  Sleep Disorders.