"The curling direction in snails is delayed a generation in its expression. The offspring of a snail are phenotypically the phenotype dictated by the genotype of the mother. Dextral curling (shell opens to the right) is dominant to sinistral curling (shell opens to the left). A cross between a homozygous sinistral female snail and a homozygous dextral male resulted in sinistral F1 progeny. If an F1 sinistral female is crossed to an F1 sinistral male, what progeny phenotypes are expected in the F2?"