genetic assimilation造句

• Waddington's theory of genetic assimilation was controversial.
• Waddington used the concept of canalisation to explain his experiments on genetic assimilation.
• Through this process of genetic assimilation, an environmentally induced phenotype had become inherited.
• Waddington's work on genetic assimilation ( GA ) has been merged into the extended evolutionary synthesis.
• Researchers study concepts and mechanisms such as developmental plasticity, epigenetic inheritance, genetic assimilation, niche construction and symbiosis.
• He held that heterochrony is a main mechanism for evolutionary change and that novelty in evolution can be generated by genetic assimilation.
• These combinations can evolve more easily when the landscape is first flattened, and the discovered phenotype is then fixed by genetic assimilation.
• 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 ".
• The conventional evolutionary view of genetic assimilation is that a trait is expressed when the quantitatve values of alleles favoring it exceed a threshold.
• This is a cause for concern over the potential for development of vigorous hybrids with invasive potential and genetic assimilation of the native species.
• During the 1950s, the English biologist C . H . Waddington called for an extended synthesis based from his research on epigenetics and genetic assimilation.
• It is, however, possible to explain genetic assimilation using only quantitative genetics and a threshold model, with no reference to the concept of canalisation.
• With regard to genetic assimilation, Waddington proposed that it is the process in which an environmental stimulus that affects the phenotype has been superseded by an internal genetic factor during the course of evolution.
• He also identified a mechanism called genetic assimilation which would allow an animal's response to an environmental stress to become a fixed part of its developmental repertoire, and then went on to show that the mechanism would work.
• The classic example of genetic assimilation was a 1953 experiment by C . H . Waddington, in which " Drosophila " fruit fly embryos were exposed to ether, producing a bithorax-like phenotype ( a homeotic change ).
• Although his theory of genetic assimilation had a Darwinian explanation, leading evolutionary biologists including Theodosius Dobzhansky and Ernst Mayr considered that Waddington was using genetic assimilation to support so-called Lamarckian inheritance, the acquisition of inherited characteristics through the effects of the environment during an organism's lifetime.