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A Certain Kind of Snail Can Have a Right-Handed Direction

question 27

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A certain kind of snail can have a right-handed direction of shell coiling (D) or left-handed coiling (d) . If direction of coiling is due to a protein deposited by the mother in the egg cytoplasm, then a Dd egg-producing snail and a dd sperm-producing snail will have offspring of which genotype(s) and phenotype(s) ?


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