Which pair of nitrogenous bases will form a bond in a dna molecule?

If two parents who's blood types are both b produce a child that has blood type o, what can you say about the parent's genotybes? oa) one is ii ob) one is ibi oc) both are bi od) nothing, this is impossible

Did you know that a blue wales tongue weighs more than an elephant?

What is used to keep track of the gamates and possible offsprings combination