From Robby Berman at BigThink:
While it’s true that every chromosome contains some of 25,000 genes, it now turns out to be the case that this is only a little more than half the story. Computer modeling has revealed that up to 47% of each chromosome is an enigmatic sheath-like substance called the “chromosome periphery,” something about which little is known. That’s because it’s almost impossible to get a good look at in actual chromosomes.
It looks like chromatin do make up from 53% to 70% of chromosomes, but the rests is the mysterious chromosome periphery. Earlier research by Booth suggests that the chromosome periphery requires the presence of the protein Ki-67 that’s believed to act as a surfactant that keeps chromosomes from clumping together. This would assign the chromosome periphery a critical job in managing cell division without errors, errors that could result in birth defects and cancer. More.
Would it be rude at this point to bring up the myth of junk DNA?
We don’t even know about half of what the chromosome does? So why do we pay any attention to genetic fundamentalism?
See also: Polyploidy: Genetic fundamentalism is still looking for a job?
Life continues to ignore what evolution experts say
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