In a certain plant, rough seeds (R) are dominant and smooth seeds (r) are recessive. Two plants with genotype Rr are crossed. What genotype would give their offspring smooth seeds?

Answer 1

Genotype of smooth seeded offspring will be rr.

Plants with genotype Rr are heterozygous: they would express dominant character (in this case rough seeds). A crossing would yield progeny in 3:1 ratio, i.e. only 25% of the progeny (rr) will bear smooth seeds.

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Answer 2

Gabriella Anderson

The genotype that would give smooth seeds in the offspring is rr.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.