These WILL be on your exam.
Blood types are an example of CO-DOMINANCE...both dominant alleles are equally expressed. In AB blood, there are A antigens fully expressed AND B antigens fully expressed.
Pink flowers are an example of INCOMPLETE DOMINANCE...the heterozygote has an intermediate phenotype between the homozygotes. (Ex: Red flowers are dominant, white flowers are recessive...and pink flowers result from the heterozygous genotype.)
Here's a lecture by old boy...well, I have no idea who this guy is, but his explanation is accurate.
Shoot me questions if you have them!
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