DNA, RNA, and Genetics Question
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A cross is performed, and the phenotypic ratio for the traits of the offspring is 9 dominant/dominant : 3 dominant/recessive : 3 recessive/dominant : 1 recessive/recessive. What can be determined about the genotype of the parents?
- Both parents had an AABB genotype.
- One parent was AABB, and the other was aabb.
- One parent was AaBb, and the other was AABB.
- Both parents had an AaBb genotype.