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....my altered genes came out in my 2 daughters and all 4 of my Grand-Children as each of my daughters have a girl & boy each....
Butt my daughters are healthier than I was and my Grand-Children healthier than my daughters so, advancement in genetic adaptation through generations of conditioning? ...
[Despite years of research, the genetic factors behind many human diseases and characteristics remain unknown. The inability to find the complete genetic causes of family traits such as height or the risk of type 2 diabetes has been called the "missing heritability" problem.
The problem of missing heritability, however, is a subtle one. Not only are the issues frequently misconstrued even by biologists (a fact often noted in the literature), but certain eminently deniable assumptions underlying the study of heritability — above all, the assumptions that “heritable” is equivalent to “genetic” and that evolutionarily significant inheritance must be the stable inheritance of things rather than integral capacities — are almost never even brought up for discussion within the mainstream literature.
…the fact is that no organisms result from genetic instructions (Talbott 2012*). And, to reinforce the point, there are flying and crawling creatures with the same genomic sequence. A monarch butterfly and its larva, for example. Nor is this an isolated case. A swimming, “water-breathing” tadpole and a leaping, air-breathing frog are creatures with the same DNA.
…the whole idea that DNA consists of an arbitrary digital sequence capable of harboring computer-like instructions is badly misconceived. Current researches overwhelmingly demonstrate that shape and structure, sculptural dynamism, changing arrangements in space and time, the mutual embrace of molecular complexes that mutually adapt to and transform each other — all this and much more is part of what each “letter” in the DNA sequence means for the organism.
This is why one researcher has referred to the chromosome as “a plastic polymorphic dynamic elastic resilient flexible nucleoprotein complex”. There is no single-minded code in the genome. The organism is an embodied creature, and the intricate, ever-changing forms of its interactions define its life.
I have found this to be a very informativev and great thread, so thanks OP. I'd like to point out that DNA technology, (in the words of a thoracic surgeon I am acquainted with), is "thousands of papers later," still not proven…
Quantifying Missing Heritability at Known GWAS Loci
Recent work has shown that much of the missing heritability of complex traits can be resolved by estimates of heritability explained by all genotyped SNPs. However, it is currently unknown how much heritability is missing….
THE ‘MISSING HERITABILITY’ OF COMMON DISORDERS: SHOULD HEALTH RESEARCHERS CARE?
This article critiques the “missing heritability” position, which calls for greater efforts and funding to identify the genetic architecture of common disorders, even if this endeavor has yet to translate into tangible prevention, diagnosis, or treatment interventions. Supporters of the position contend that genetic variants “for” common disorders, which they argue must exist based on heritability estimates (hence their “missing heritability” position), have not been found because the current state of science and technology is not adequate to the task, yet they insist that this search warrants significant societal invest- ments. We argue, instead, that these variants have not been found because they do not exist. The thrust of the problem with the “missing heritability” position, we propose, lies in its proponents’ use of faulty concepts and research methods, including reliance on twin studies, plagued with environ- mental confounds; on the concept of heritability, a breeding statistic and not a measure of the importance of genetic influences on phenotypes; and on the belief that genetic variations are relevant to understanding, preventing, or treating common disorders, a belief that we argue is false. We elaborate on these problems, discuss their public health implications, and suggest future directions for a critical analysis of human genetics.
reply to post by soficrow
I discovered epigenetics by following prion research - but only now discovered that genetics dogma has been seriously and legitimately questioned for some time. I avoided such discussions here because I assumed they were science v/s religion rants. GREAT camouflage - guess I missed lot. Guess that was the strategic intent. lol
Your references seem to focus on specific environmental stressors (legitimately) while I'm getting into the systems biology.
...When DNA was still being debated, ...And, as with any theory, it still should be debated.
[Despite years of research, the genetic factors behind many human diseases and characteristics remain unknown. The inability to find the complete genetic causes of family traits such as height or the risk of type 2 diabetes has been called the "missing heritability" problem.
…the fact is that no organisms result from genetic instructions (Talbott 2012*). And, to reinforce the point, there are flying and crawling creatures with the same genomic sequence. A monarch butterfly and its larva, for example. Nor is this an isolated case. A swimming, “water-breathing” tadpole and a leaping, air-breathing frog are creatures with the same DNA.
…the whole idea that DNA consists of an arbitrary digital sequence capable of harboring computer-like instructions is badly misconceived. Current researches overwhelmingly demonstrate that shape and structure, sculptural dynamism, changing arrangements in space and time, the mutual embrace of molecular complexes that mutually adapt to and transform each other — all this and much more is part of what each “letter” in the DNA sequence means for the organism.
This is why one researcher has referred to the chromosome as “a plastic polymorphic dynamic elastic resilient flexible nucleoprotein complex”. There is no single-minded code in the genome. The organism is an embodied creature, and the intricate, ever-changing forms of its interactions define its life.
soficrow
reply to post by tetra50
Arguably, there are infinite factors that could have epigenetic effects - no doubt electricity and magnetism are 2 of that infinite number.
PS. You didn't post links, you posted titles.
edit on 26/2/14 by soficrow because: (no reason given)
Science, Genes, and Ideology: THE ‘MISSING HERITABILITY’ OF COMMON DISORDERS: SHOULD HEALTH RESEARCHERS CARE?
This article critiques the “missing heritability” position, which calls for greater efforts and funding to identify the genetic architecture of common disorders, even if this endeavor has yet to translate into tangible prevention, diagnosis, or treatment interventions. Supporters of the position contend that genetic variants “for” common disorders, which they argue must exist based on heritability estimates (hence their “missing heritability” position), have not been found because the current state of science and technology is not adequate to the task, yet they insist that this search warrants significant societal invest- ments. We argue, instead, that these variants have not been found because they do not exist. The thrust of the problem with the “missing heritability” position, we propose, lies in its proponents’ use of faulty concepts and research methods, including reliance on twin studies, plagued with environ- mental confounds; on the concept of heritability, a breeding statistic and not a measure of the importance of genetic influences on phenotypes; and on the belief that genetic variations are relevant to understanding, preventing, or treating common disorders, ….is false. We elaborate on these problems, discuss their public health implications, and suggest future directions for a critical analysis of human genetics.
reply to post by soficrow
Arguably, there are infinite factors that could have epigenetic effects - no doubt electricity and magnetism are 2 of that infinite number.
lol. Don't know why you think the debate is over - genes and DNA do not explain much - and the whole "missing heritability" thing is a big joke in many circles.
Epigenetic marks can pass from parent to offspring in a way that completely bypasses egg or sperm, thus avoiding the epigenetic purging that happens during early development. Most of us were taught that our traits are hard-coded in the DNA that passes from parent to offspring. Emerging information about epigenetics may lead us to a new understanding of just what inheritance is.
Some epigenetic tags remain in place as genetic information passes from generation to generation, a process called epigenetic inheritance.
Epigenetic inheritance is an unconventional finding. It goes against the idea that inheritance happens only through the DNA code that passes from parent to offspring. It means that a parent's experiences, in the form of epigenetic tags, can be passed down to future generations.
As unconventional as it may be, there is little doubt that epigenetic inheritance is real. In fact, it explains some strange patterns of inheritance geneticists have been puzzling over for decades.
….epigenetic changes are transient by nature. That is, the epigenome changes more rapidly than the relatively fixed DNA code. An epigenetic change that was triggered by environmental conditions may be reversed when environmental conditions change again.
Implications for Evolution
Epigenetic inheritance adds another dimension to the modern picture of evolution. The genome changes slowly, through the processes of random mutation and natural selection. It takes many generations for a genetic trait to become common in a population. The epigenome, on the other hand, can change rapidly in response to signals from the environment. And epigenetic changes can happen in many individuals at once. Through epigenetic inheritance, some of the experiences of the parents may pass to future generations. At the same time, the epigenome remains flexible as environmental conditions continue to change. Epigenetic inheritance may allow an organism to continually adjust its gene expression to fit its environment - without changing its DNA code.
A Challenge to the Supremacy of DNA as the Genetic Material
By Ricki Lewis, PhD
Posted: March 20, 2014
About a month ago, a news release stood out among the many I get every day: “A challenge to the genetic interpretation of biology,” from a physicist and chemist from Finland, Arto Annila and Keith Baverstock. They’d just published “Genes without prominence: a reappraisal of the foundations of biology,” in the Journal of the Royal Society Interface.
......I was mesmerized, mostly because I am immersed in writing the 11th edition of my human genetics textbook and a non-DNA-centric view got me thinking. So I read the paper and asked the authors to guest post. Their idea brought me back to pre-1953 thinking that proteins are the genetic material, mostly because we knew more about them than the mysterious goop on soiled bandages that was DNA.
....Dr. Baverstock kindly agreed to ....share his thoughts, slightly edited, subheads added:
A VIEW FROM PHYSICS
Arto Annila and I are making the seemingly outrageous claim that mainstream biology, since around the 1920s, has pursued a course that is deeply flawed. Critical to that course is the notion that genes are Mendel’s units of inheritance and that their material realization is a DNA base sequence. We propose instead that Mendel’s unit of inheritance is a process involving the interaction of mainly activated proteins contributing to an attractor state that represents the phenotype. Many will find this language of physics unfamiliar. However, cells are complex dissipative systems (CDS) in that they consume energy and thus operate according to the 2nd law of thermodynamics as it applies to open systems.
.........MORE, with comments........
have we come to a conclusion? Is the source bu||$π¡+? Or not? I can only put up with so much phage for one night....
originally posted by: Phage
reply to post by soficrow
We share the same genes but those genes are not all the same. Variations within a gene result in differences between people. A variation within the HERC2 gene causes people to have blue eyes. We all have the gene but we don't all have blue eyes.
we all share the same genes yet are unique and often hugely different.
genetics.thetech.org...
"the study of changes in gene function that are mitotically and/or meiotically heritable and that do not entail a change in DNA sequence."
Yes. Gene function. Genetic function.
....cells are complex dissipative systems (CDS) in that they consume energy and thus operate according to the 2nd law of thermodynamics as it applies to open systems.