12. D
13. B
14 . C
I hope I helped you. I don't know if I was helpful.
<span>Some antibiotics are almost useless, because pathogens have developed a resistance to these antibiotics.
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Possible blood types of the child with parents whose genotypes are AO and AB are: C. A, AB, B
Possible genotypes for 4 blood types
Type O - OO
Type A - AA, AO
Type B - BB, BO
Type AB - AB
A O
A AA AO
B AB BO
Genotype AA and AO are under TYPE A
Genotype AB is under TYPE AB
Genotype BO is under TYPE B