The cells of the blastula, called blastomeres, also each receive a full diploid set of chromosomes.
The authors have observed that the blastoderm, the blastomeres and the blastula cells have intimate relation with the yolk which plays a very important part in the development of the embryo.
The results indicated that the fertilized eggs in blastula stage and yolk-sac larva of Paralichthys olivaceus were more sensitive to algal toxin than those in other development stages.
