The evolution of multicellularity in eukaryotes A. occurred independently in several eukaryotic lineages B. occurred only once, in the common ancestor of all eukaryotes C. occurred only once, in the common ancestor of all animals D. occurred only once, in the common ancestor of all multicellular eukaryotes

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.