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Author Question: A certain kind of snail can have a right-handed direction of shell coiling (D) o (Read 643 times)

Hungry!

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on: Jun 21, 2013
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)?
A) 1/2 Dd:1/2 dd; all right coiling
B) all Dd; all right coiling
C) 1/2 Dd:1/2 dd; half right and half left coiling
D) all Dd; all left coiling
E) all Dd; half right and half left coiling


camila

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Reply #1 on: Jun 22, 2013
100% it's A, don't forget to gimmi a thumbs up :D


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Hungry!

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Reply #2 on: Aug 13, 2013
Thanks so much, you were right on.


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