MCQ
A child's blood group is ‘$O$'. The parents blood groups cannot be
- ✓$AB$ and $O$
- B$B$ and $O$
- C$A$ and $B$
- D$A$ and $A$
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$(A)$ Linked genes cause absolute lethality
$(B)$ Persons affected by $PKU$ do not show mental disorder
$(C)$ $F_{2}$ ratio in codominance and incomplete dominance are same
$(D)$ Sex of male Drosophila is dependent on $Y-$chromosome