What are the Co-dominance in Test Cross and Back Cross?

1.	What are the Co-dominance in Test Cross and Back Cross?
Answer» Both parental genes expressed in F1 progeny so the offspring shows resemblance with both the parents. Eg- ABO blood group types in human. Blood group shows 3 different alleles (I^A , I^B , I^O) and 6 different possible genotypes. Cross between I^A I^O x I^B I^O , shows the law of dominance, co-dominance & multiple alleles.

Answer»

Both parental genes expressed in F1 progeny so the offspring shows resemblance with both the parents.

Eg- ABO blood group types in human. Blood group shows 3 different alleles (I^A , I^B , I^O) and 6 different possible genotypes. Cross between I^A I^O x I^B I^O , shows the law of dominance, co-dominance & multiple alleles.

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What are the Co-dominance in Test Cross and Back Cross?

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