Ribbon meaning: childhood cancer (alternative color: pink), prostate cancer, Trisomy 18, and scleroderma. Dark Blue: knowledge, power, integrity, and seriousness. Ribbon meaning: arthritis, child abuse prevention, victim's rights, free speech, water quality, and water safety. Brown: stability, masculine qualities.
But, it was not until the early 1900s that any scientific studies were done of the phenomenon. Austrian naturalist Konrad Lorenz became the first to codify and establish the science behind the imprinting process. Lorenz found that when young birds came out of their eggs they would become attached to the first moving object they encountered. In most cases in the wild, that would be their mother.
The phenomenon of genomic imprinting evolved in a common ancestor to marsupials and eutherian mammals over 150 million years ago (Killian et al, M6P/IGF2R imprinting evolution in mammals.Mol Cell 5: 707-716, 2000). Thus, genomic imprinting evolved in mammals with the advent of live birth.oth copies are functional for the majority of these genes; however, in a small subset one copy is turned off in a parent-of-origin dependent manner. These genes are called 'imprinted' because one copy of the gene was epigenetically marked or imprinted in either the egg or the sperm.