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When F1 progeny (tall, round seeds) from the dihybrid cross are self-pollinated, the F2 generation shows

Question
When F1 progeny (tall, round seeds) from the dihybrid cross are self-pollinated, the F2 generation shows
only the two parental combinations (tall-round and short-wrinkled)
the two parental combinations plus new combinations such as tall-wrinkled and short-round
no seeds are produced at all
only tall-wrinkled combinations
Answer
the two parental combinations plus new combinations such as tall-wrinkled and short-round
Detailed Explanation
The chapter states F2 progeny show tall-round and short-wrinkled plants (like the parents), plus new combinations such as tall-wrinkled and short-round.
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