Diagram showing radial symmetry |
Diagram showing bilateral symmetry |
Starfish Embryology |
  Body cavities: Acoelomate, coelomate (eucoelomate) and pseudoceolomate. |
Diagram of spiral cell cleavage |
Illustration of radial cell cleavage |
Diagram of schizocoelus coelom formation. Protostome |
  Formation of the coelom by enterocoelic pouching - Deuterostome |
Diagram showing the difference between and open and closed circulatory system. |
Analogous structures: wing of an insect, bird bat and pterosaur |
Homologous structures: vertebrate limbs: human, dog, horse, whale. |
 Nervous system of a radial vs. a typical invertebrate bilateral organism |
 Chemoreceptors of an insect and a mammal |
 Eyes of a vertebrate and insect |
 Retinal layers of a vertebrate |
 Feeding by a clam |
 Hormones controlling molting and development in a fly |
 Conugation by Paramecium |
 Monohybrid cross |
 Early development of the genitalia are under hormonal control |
 Procedure to make a karyotype |
 A typical "box egg" |
 An evolutionary timeline based on fossil evidence |
 Early Frog Embyology |
 Chick membranes |
 24- and 48 hour chick embryos |
 Brain and CNS images |
 Open and closed circulation |
 Four-chambered circulation |
 Three-chambered heart (frog) |
 Skeletons and Skulls |