If mice from the F1 generation are crossed, their offspring are the .

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

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

Physical characteristics of down syndrome