The deoxyribonucleic acid (DNA) and its associated genes biologically forbid the synthesis of transitional types of organisms. That is why no transitional types of organisms presently are found in the biosphere. That is also why no transitional types of organisms are found in the fossil record. The biology of DNA and its genes forbid transitional types of organisms now, and always have forbidden them. And there is good reason for such bounded biological impossibilities.
The biosphere is a global organism replete with a complex network of interdependencies. One of the most basic of these interdependencies is that plants depend on animals to produce carbon dioxide whereas animals depend on plants to produce oxygen. The metabolic byproduct of one is necessary for the metabolism of the other. And so the myriad interdependencies are woven throughout the biosphere. The advantage is that no individual organism needs to provide for all of its metabolic needs. The animals are spared the necessity of providing their need for oxygen and the plants are spared the necessity of providing their need for carbon dioxide. In the myriad networks of needs and byproducts, the biosphere as a global organism flourishes because it is so extensively and intricately balanced.
However, if organisms could wander and become transitional types, then those marvelous intricacies would be disrupted. That would leave those dependent upon their previous contribution to suffer and die. And as they died their contributions would stop and that would cause others to die. As the entire delicately balanced network is thrown into deadly chaos, eventually the entire global organism would die and with it all of the organisms dependent upon it. To prevent the demise of the entire biosphere, organisms must not wander, they must not be allowed to become transitional, nor change in any fundamental way. For the survival of the global organism and the myriad interdependencies, including their own, each organism must stay faithful to its designed role. And that is what is guaranteed by the DNA and its associated genes. Inviolate biological boundaries are an absolute necessity for any global organism, as it is for the cells in any complex organism.
Clearly, the original speculation by Anaximander that organisms would spontaneously arise then evolve from simple to complex was naive imagination (that Darwin copied from Anaximander without attribution, see above). Anaximander had never seen it, nor had the plagiarist Charles Darwin. It was a religious myth useful to justify the slave trade, the exploitation of colonies, the justification for world domination, and the fictitious justification to search for extraterrestrial life. Each application brought with it greater riches. And so unbiased science was sold out from the history of science by totalitarian commerce. It is long past the time to replace the primitive religious imaginings of Anaximander and Darwin with the true biological facts that admit the myriad interdependencies of the biosphere. And the fact that transitional types always had to be biologically forbidden.
View his latest book, in the Creation Superstore. Originality throughout the Universe covers the entire universe and proves that every object in it was created. And the proofs are not merely subjective arguments. There are no more convincing objective proofs in all of secular classical science.