Which parents P1 with the following genotypes would most likely produce the largest number of offspring with recessive traits?BB x BbBb x BbBb x bbBB x bb
Question
Which parents P1 with the following genotypes would most likely produce the largest number of offspring with recessive traits?
- BB x Bb
- Bb x Bb
- Bb x bb
- BB x bb
Solution
The parents that would most likely produce the largest number of offspring with recessive traits would be Bb x bb.
Here's why:
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BB x Bb: All offspring would have at least one dominant allele (B), so none would express the recessive trait.
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Bb x Bb: This would result in a 1:2:1 ratio of BB:Bb:bb, so only 25% of the offspring would express the recessive trait.
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Bb x bb: This would result in a 1:1 ratio of Bb:bb, so 50% of the offspring would express the recessive trait.
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BB x bb: All offspring would have at least one dominant allele (B), so none would express the recessive trait.
So, the cross between Bb and bb would produce the highest number of offspring with recessive traits.
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