Search results
Results from the WOW.Com Content Network
Waddington called the effect he had seen "genetic assimilation". His explanation was that it was caused by a process he called "canalization".He compared embryonic development to a ball rolling down a slope in what he called an epigenetic landscape, where each point on the landscape is a possible state of the organism (involving many variables).
In evolutionary biology, the Baldwin effect describes an effect of learned behaviour on evolution. James Mark Baldwin and others suggested that an organism's ability to learn new behaviours (e.g. to acclimatise to a new stressor) will affect its reproductive success and will therefore have an effect on the genetic makeup of its species through ...
Through this process of genetic assimilation, an environmentally induced phenotype had become inherited. Waddington explained this as the formation of a new canal in the epigenetic landscape. It is, however, possible to explain genetic assimilation using only quantitative genetics and a threshold model, with no reference to the concept of ...
[7] [8] The genes and mechanisms involved in regulating neurogenesis are the subject of intensive research in academic, pharmaceutical, and government settings worldwide. The amount of time required to generate all the neurons of the CNS varies widely across mammals, and brain neurogenesis is not always complete by the time of birth. [ 3 ]
Equilibration encompasses both assimilation and accommodation as the learner changes how they think to get a better answer. Piaget believed that knowledge is a biological function that results from the actions of an individual through change.
Waddington proposed an evolutionary process, "genetic assimilation", as a Darwinian mechanism that allows certain acquired characteristic to become heritable. According to Navis, (2007) "Waddington focused his genetic assimilation work on the crossveinless trait of Drosophila. This trait occurs with high frequency in heat-treated flies.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Assimilation is the process of absorption of vitamins, minerals, and other chemicals from food as part of the nutrition of an organism. In humans, this is always done with a chemical breakdown ( enzymes and acids ) and physical breakdown (oral mastication and stomach churning).