Figure 6: CK2α localization and dorsal axis formation. During oogenesis, CK2α mRNA is localized to the animal pole, in a process dependent on its coding and 3’UTR sequences, while the dorsal determinant are localized to the vegetal pole. Fertilized embryos will inherit the dorsal determinants and CK2 protein in nonoverlapping regions that will come together after cortical rotation in the region where dorsal specification will be initiated.