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유전자 변화 없는 형질의 변화, 진화의 다른 작동방식인가? 생명체에 주어진 본질적 특성인가?
박춘호(Choon Ho PARK) 창조론오픈포럼 2020 창조론오픈포럼 Vol.14 No.2
Living organisms have the characteristic of adaption by changing their traits in response to the external environment. In modern evolutionary theory, this change in traits is caused by changes in genes and become the major driving force of evolution. However, in order to cope with sudden changes in the external environment, living organisms can create various new traits without changing genes, which is called phenotypic plasticity. This phenomenon is contrary to the gene-centered view of evolution and the basis for supporting the extended evolutionary synthesis. From a creationist"s point of view, phenotypic plasticity can be said to be the intrinsic ability of living organisms to adapt to the environment without gradual genetic changes.
박춘호(Choon-Ho Park),김경태(Kyong-Tai Kim) 창조론오픈포럼 2008 창조론오픈포럼 Vol.2 No.1
Neo-Darwinian theory based on the premise that the genome is an "unstable" and "mutable" entity. In fact, there are several phenomena that seem to support the evolution via genetic variation. However, modern molecular biology has also revealed that the genome is essentially "stable" to ensure the stability of genetic information from generation to generation. The DNA repair machinery is an example of irreducibly complex system made up of sophisticated protein network. In addition to DNA repair system, cell cycle arrest followed by apoptosis operates in the cell when DNA damage is detected. This machinery prohibits the accumulation of genetic instability in cells. If genetic instability is escaped from the above surveillance system, the life would be in danger because of tumor generation. Therefore, genomic stability could be a challenge to Neo-Darwinian theory.
유전자 중심적 진화론에 대한 의문 : 확장된 진화종합이론의 등장에 대한 기독교 철학적 단상
박춘호(Choon Ho PARK) 창조론오픈포럼 2020 창조론오픈포럼 Vol.14 No.1
The core concept of modern evolutionary theory is that traits of living things evolve through gradual genetic changes. According to this theory, genes are major driving force for evolutionary process. This gene-centered view of evolution has recently been challenged by the extended evolutionary synthesis(EES), which claims the evolution that does not involve genetic change. The EES calls for a revision of the existing gene-centered evolutionary theory, reflecting various research achievements in modern biology. From a Christian philosophical point of view, this debate in evolutionary biology can be regarded as a process of positive change for a more comprehensive and integrated view of life.
후성유전학 혁명, 진화론의 재부상인가? 창조의 새로운 지평인가?
박춘호(Choon-Ho PARK) 창조론오픈포럼 2017 창조론오픈포럼 Vol.11 No.1
Epigenetics is the study of potentially heritable changes in gene expression without any variations in its DNA sequence. These trans-generational epigenetic phenomena found in biological systems are reminiscent of ‘inheritance of acquired characteristic’ originally proposed by Lamarck in early 19th century. Actually, it has been found that phenotypes are changed by the epigenetic principles in various organisms without changing the genetic information. Thus, some evolutionists began to question the premise that genes are the major driving force of evolution. From a creationist point of view, epigenetics is a deliberately designed process for manifesting various traits in response to external environmental changes.