change a codon to one that encodes a different amino acid and cause a small change in the protein produced. For example, sickle cell anemia is caused by a substitution in the beta-hemoglobin gene, which alters a single amino acid in the protein produced.
Answer:
In the ABO series, the gene for blood type O is<u><em> recessive</em></u>, while A and B are <u><em>dominant </em></u>genes, and AB is <u><em>co-dominant</em></u>.
Explanation:
According to the ABO blood system, the A blood group might have the genotype AA or AO. The B blood group might have genotype BB or BO. The O blood group will have the genotype OO. The Ab blood group will have genotype AB, A, B or O.
The O is the recessive allele but a person with O blood type can transfer blood to all other blood types. The AB is co-dominant and it can accept blood from all other blood types.
Small intestine is wear this happens