Teratogenic agents

It is estimated that 10% of all birth defects are caused by prenatal exposure to a teratogenic agent. These exposures include, but are not limited to, medication or drug exposures, maternal infections and diseases, and environmental and occupational exposures. A wide range of different chemicals and environmental factors are suspected or are known to be … Read more


Transgenics are humans whose genetic structure has been altered through introducing animal DNA into their genome. Cloning refers to the reproduction of genetically identical specimen. Today, many labs conduct advanced researchs in order to study gene development and disease processes through transgenics. Transgenic research is already 30% of all government-funded research grants. Transgenic exploration is … Read more

Wrong chemicals

Wrong chemicals like thalidomide brings phocolemy (baby born with hands and foot directly attached to the body). In 6 years (1956-1962), it made more than 8000 victims in Germany, the United States and Latine America. The excess of lead, mercury or dioxin in the alimentation can also triggers disformations in the body of the offsprings. … Read more


A mutant is a, individual that has a mutation in DNA that can be transmitted to its offspring. The term mutant hybrid sometimes used in some books, is a misnomer. Mutants should not be confused with organisms born with developmental abnormalities, which are caused by errors during morphogenesis. In a developmental abnormality, the DNA of … Read more


Attila was believed to be the son of a dog and old woman. Other superstitions and beliefs involving confusion of species around individuals and races abounds in history. Sexual intercourse with animals would breed monsters with traits from both world, human and animal. Today, more than one on two people still believe that it is … Read more

Gene disorders

Gene mutations can be either inherited from a parent or acquired. A hereditary mutation is a mistake that is present in the DNA of virtually all body cells. Hereditary mutations are also called germline mutations because the gene change exists in the reproductive cells (germ cells) and can be passed from generation to generation, from … Read more


A primitive but still active belief is that pregnant women may be suggested in such a way that they give birth to monstrous children. Malebranche theorized that monstrous births were caused by the imagination of the mother on the foetus, which was achieved through communication between the nerves of the mother and the nerves of … Read more

Warning of gods, portents, omens

The term Monstrous has a rich etymology, which includes Moneo meaning warning. The birth of monstrous children was given in the antics and later a fatal signification. At one period certain phenomena of nature, such as an eclipse or comet, were thought to exercise their influence on monstrous births. Rueff mentions that in Sicily there … Read more