And the advent of genome mapping has kept them in the science news too. Think “mitochondrial Eve” and quarter million-year-old Adam. It’ll get more interesting still with new finds, we can be sure.
If so, it’s remarkable outcome for genome mapping: So it has been dawning on us is that there is no prior plan or blueprint for development: Instructions are created on the hoof, far more intelligently than is possible from dumb DNA. That is why today’s molecular biologists are reporting “cognitive resources” in cells; “bio-information intelligence”; “cell […]
“If you duplicate at a different place and time, you might assemble a completely different structure,” Gilbert said. “A cell has different things available to it at different times. Changing when something replicates changes the packaging of the genetic information.”
From ScienceDaily: When a building is damaged, a general contractor often oversees various subcontractors — framers, electricians, plumbers and drywall hangers — to ensure repairs are done in the correct order and on time. Similarly, when DNA is damaged, a molecular general contractor oversees a network of genetic subcontractors to ensure that the diverse cellular […]
He thinks the Central Dogma of mitochondrial DNA needs to be rethought.
It was hardly heard of before and hardly widely predicted; now the Darwinian question is, why isn’t it more common? Why? Because there are two conflicting evolutionary forces at work. In the short-term, mixing mitochondria can be beneficial to individuals because the father’s mitochondria, say, can compensate for a harmful mutation in the mother’s mitochondria. […]
From ScienceDaily: The birder and biologist was Tom Smith, who has spent his career studying finches — specifically, black-bellied seedcrackers (Pyrenestes ostrinus) — in Cameroon and in his lab at the University of California-Los Angeles. He and his colleagues have spent years investigating why some of these finches have small beaks while others have large […]
At her blog, Oscillations, Suzan Mazur offers suggestions for panelists and explains why more public input is needed in this area, which is ramping up in the United States: NSF says it cares about the “social and ethical dimensions of such research.” So who gets to say what synthetic cell research meets society’s approval? I think […]
Seventeen individuals from three unrelated multi-generation families have shown the trait (a high level of mtDNA heteroplasmy, ranging from 24 to 76 percent): A new study led by geneticist Taosheng Huang from the Cincinnati Children’s Hospital Medical Centre shows human mitochondrial DNA can be paternally inherited, in a landmark case that started with the treatment […]
From Nature’s editors: “A move to classify people on the basis of anatomy or genetics” should be abandoned. According to a draft memo leaked to The New York Times, the US Department of Health and Human Services (HHS) proposes to establish a legal definition of whether someone is male or female based solely and immutably on […]
Researchers Nigel Goldenfeld and Thomas Kuhlman noticed that “half of the human genome is made up of retrotransposons [jumping genes, “junk DNA”], but bacteria hardly have them at all” and wondered what would happen if they just inserted some: “We thought a really simple thing to try was to just take one (retrotransposon) out of […]
A classic in devolution, actually. In Mozambique, it is estimated that 90% of the elephants have been slaughtered for ivory to finance a civil war that ended in 1992. But tuskless elephants seem more likely to survive: Hunting gave elephants that didn’t grow tusks a biological advantage in Gorongosa. Recent figures suggest that about a […]
Recently, we noted that John Sanford was speaking at NIH on human health and mutations. Philip Cunningham writes to mention a 2017 paper by Sanford and S. T. Cordova, Nylonase Genes and Proteins – Distribution, Conservation, and Possible Origins on whether the ba cteria that digest nylon evolved new genes: We began this work hoping […]
Geneticist John Sanford is also the author of Genetic Entropy: and one of the editors of Biological Information: New Perspectives: Proceedings of a Symposium Held May 31 Through June 3, 2011 at Cornell University Note: In a distinctly unsavoury move, devout Darwinians managed to get Biological Information dropped by Springer. It is all the more […]
It’s now suggested that people likely to live long tend to find each other (assortative mating). How else to explain this?Researchers found that siblings’ and first cousins’ lifespans were well correlated but also: But spouses’ lifespans were correlated, too. That could be easily explained by spouses sharing the same household and lifestyle: eating the same […]