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An organism has two unlinked genes P and Q. Its genotype is PpQq. How many different types of gametes will be formed?
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Four
If genes are unlinked than they separate during gamete formation and a dihybrid PpQq forms 4 types of gamete. A gamete can have only one allele of a gene thus four types of gametes are formed PQ, Pq, pQ, pq.
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