In the following questions or statements, circle the letter associated with the one answer or version of the statement that you consider to be the most adequate. In species with regulatory development, a normally proportioned larva may develop from a. an isolated blastomere b. two early embryos stuck together c. both of the above are correct d. The activity of a localized cytoplasmic determinant is proved by a. the unequal distribution of a visible cytoplasmic component b. heterotopic transplantation c. both of the above are correct d. RNA-containing particles 8.
Discoidal cleavage is characteristic of a. birds b.
For the following questions, either three of the statements are correct and one is false, or three are false and one is correct. Pick the one odd statement, be it correct or false, and circle the respective letter. Germ Cell Development a. The maturation of male and female gametes differs in the number of meiotic divisions. Histones in oocyte nuclei are replaced by protamines.