Codominance "co-" is "together".  Refers to a relationship between two alleles of a gene. Both traits appear in an organism. They do not overpower each other. Ex: spotted dog, two different colored eyes, pink and white flower.alleles

Incomplete dominance  A cross between organisms with two different phenotypes produces offspring with a third phenotype that is a of the parent’s traits.  Ex: RED Flower x WHITE Flower ---> PINK Flower

Multiple Alleles  allele = (n) a form of a gene which codes for one possible outcome of a phenotype.  Ex. Fur color = B=black, b=white  Multiple means that one gene can have many alleles. Ex: Blood type = A, B, AB, O.

Blood types: Blood Type CaucasiansAfrican American Hispanic Asian O +37%47%53%39% O -8%4% 1% A +33%24%29%27% A -7%2% 0.5% B +9%18%9%25% B -2%1% 0.4% AB +3%4%2%7% AB -1%0.3%0.2%0.1% GENOTYPES I A I A I A i RESULTING PHENOTYPES Type A Type A I B I B I B iType B I A I B Type AB i Type O

Examples: I A I A I B I A iI B i I A I B x I A i I A I B I A i Genotypes:Phenotypes: I A I A, I A i, I A I B, I B I A, AB, B 25 % 25% 25% 25% 50%, 25%, 25%