BLOOD TYPES

TYPES TYPE A TYPE B TYPE AB TYPE O

CODOMINANCE 2 Dominant alleles are expressed at the same time Controlled by multiple alleles The A gene and the B gene are dominant which is why you can have Type AB blood

USES Use blood types to determine paternity & crime scene investigation (blood spatter, comparing blood types to suspects & victims) Now they use DNA because it is more reliable

Type O- universal donor Type AB- universal recipient Type O- can only receive Type O blood Type A- can get Type A or O Type B- can get Type B or O Type AB- can get all four

POSSIBLE ALLELES A- DOMINANT B- DOMINANT O- RECESSIVE TYPE A TYPE B TYPE ABTYPE O AA BB AB OO AO BO

OR!!! TYPE A TYPE B TYPE AB TYPE O I A I A I B I B I A I B ii I A i I B i Cross a parent with Type AB with a parent with Type B blood (do 2 different punnett squares)

AB x BBAB x BO A B A B B B B O Type AB or Type BType AB, B, A ABBB ABBB ABBB AOBO