A certain kind of snail can have a right-handed direction of shell coiling (D) or left-handed coiling (d). Direction of coiling is due to a protein...

A certain kind of snail can have a right-handed direction of shell coiling (D) or left-handed coiling (d). Direction of coiling is due to a protein deposited by the mother in the egg cytoplasm. Thus, a Dd egg-producing snail and a dd sperm-producing snail (snails are hermaphroditic) will have offspring of which genotype(s) and phenotype(s)?A. ½ Dd : ½ dd ; all right-coilingB. all Dd ; all right-coilingC. ½ Dd : ½ dd ; ½ right-coiling : ½ left-coilingD. all Dd ; all left-coilingE. all Dd ; ½ right-coiling : ½ left-coiling