A recent 11 July 2017 paper of Dan Graur "An upper limit on the functional fraction of the human genome" concludes that the functional fraction within the human genome cannot exceed 25%, and is probably considerably lower:
However, in 2012, the ENCODE concluded that more than 80% of the human genome sequence is functional:
Ewan Birney, the ENCODE project's Lead Analysis Coordinator said it is likely that 80% will go to 100%, which is in line with what the creationists claimed:
In July 2013, at the presentation "How to Assemble a Human Gemome?" at the Society for Molecular Biology and Evolution, Dan Graur said, if organisms are designed, then as much as possible all DNA is expected to exhibit function.
EDIT:
An integrated encyclopedia of DNA elements in the human genome : Nature : Nature Research
Defining functional DNA elements in the human genome
A Test to Determine Whether or Not We Have a Creator – Proslogion
The ENCODE Embroilment, Part II by Casey Luskin
For 80% of the human genome to be functional, each couple in the world would have to beget on average 15 children and all but two would have to die or fail to reproduce. If we use the upper bound for the deleterious mutation rate (2 × 10−8 mutations per nucleotide per generation), then becomes ~5 × 1042, i.e., the number of children that each couple would have to have to maintain a constant population size would exceed the number of stars in the visible universe by ten orders of magnitude.
even for unrealistically low estimates of deleterious mutation rates, the fraction of the genome that can be functional cannot exceed 25%. If the fraction of deleterious mutations out of all mutations in functional regions is even slightly higher than 4%, then the fraction of the genome that can be functional becomes much lower. Realistically, the functional fraction of the genome cannot exceed 10–15%. These results agree with empirical estimates in the literature on the fraction of the human genome that is evolutionarily constrained
even for unrealistically low estimates of deleterious mutation rates, the fraction of the genome that can be functional cannot exceed 25%. If the fraction of deleterious mutations out of all mutations in functional regions is even slightly higher than 4%, then the fraction of the genome that can be functional becomes much lower. Realistically, the functional fraction of the genome cannot exceed 10–15%. These results agree with empirical estimates in the literature on the fraction of the human genome that is evolutionarily constrained
However, in 2012, the ENCODE concluded that more than 80% of the human genome sequence is functional:
During the new study, researchers linked more than 80 percent of the human genome sequence to a specific biological function and mapped more than 4 million regulatory regions where proteins specifically interact with the DNA. These findings represent a significant advance in understanding the precise and complex controls over the expression of genetic information within a cell. The findings bring into much sharper focus the continually active genome in which proteins routinely turn genes on and off using sites that are sometimes at great distances from the genes themselves. They also identify where chemical modifications of DNA influence gene expression and where various functional forms of RNA, a form of nucleic acid related to DNA, help regulate the whole system.
"During the early debates about the Human Genome Project, researchers had predicted that only a few percent of the human genome sequence encoded proteins, the workhorses of the cell, and that the rest was junk. We now know that this conclusion was wrong," said Eric D. Green, M.D., Ph.D., director of the National Human Genome Research Institute (NHGRI), a part of the National Institutes of Health. "ENCODE has revealed that most of the human genome is involved in the complex molecular choreography required for converting genetic information into living cells and organisms."
"During the early debates about the Human Genome Project, researchers had predicted that only a few percent of the human genome sequence encoded proteins, the workhorses of the cell, and that the rest was junk. We now know that this conclusion was wrong," said Eric D. Green, M.D., Ph.D., director of the National Human Genome Research Institute (NHGRI), a part of the National Institutes of Health. "ENCODE has revealed that most of the human genome is involved in the complex molecular choreography required for converting genetic information into living cells and organisms."
Ewan Birney, the ENCODE project's Lead Analysis Coordinator said it is likely that 80% will go to 100%, which is in line with what the creationists claimed:
The remaining 20 percent may not be junk either, according to Ewan Birney, the project’s Lead Analysis Coordinator. He explains that while ENCODE looked at 147 different types of cells, there are a couple of thousand in total. If other cell types are examined, functions may emerge for the phantom proportion. “It’s likely that 80 percent will go to 100 percent,” Birney said. “We don’t really have any large chunks of redundant DNA. This metaphor of junk isn’t that useful.”
In July 2013, at the presentation "How to Assemble a Human Gemome?" at the Society for Molecular Biology and Evolution, Dan Graur said, if organisms are designed, then as much as possible all DNA is expected to exhibit function.
"If the human genome is indeed devoid of junk DNA as implied by the ENCODE project, then a long, undirected evolutionary process cannot explain the human genome. If on the other hand organisms are designed, then all DNA, or as much as possible, is expected to exhibit function. If ENCODE is right, then evolution is wrong."
EDIT:
An integrated encyclopedia of DNA elements in the human genome : Nature : Nature Research
Defining functional DNA elements in the human genome
A Test to Determine Whether or Not We Have a Creator – Proslogion
The ENCODE Embroilment, Part II by Casey Luskin
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