Human evolution Intelligent Design

Fruit fly study casts doubt on the “carbs are bad” neutral evolution theory

Spread the love
Drosophila melanogaster Proboscis.jpg
fruit fly/Sanjay Acharya (CC BY-SA 4.0)

From ScienceDaily:

Fruit fly research challenges neutral theory of molecular evolution and suggests one day we may be prescribed diets according to our genes.

Fruit fly larvae with a noted mitochondrial DNA (mtDNA) mutation showed a pronounced increase in development when eating high carbohydrate diet of banana, but stagnated on a high protein diet of passionfruit.

Conversely, fruit fly larvae without the mtDNA mutation thrived on the high protein diet, but dropped in frequency when put on carbohydrates.

UNSW School of Biotechnology & Biomolecular Sciences Professor Bill Ballard, who led the study, says the research is a rare demonstration of positive selection at work in evolution.

“What is unique about this study is we’ve identified one mutation in the mitochondrial genome, that when fed a specific diet is advantageous and causes the frequency of flies in a population cage to increase,” he says.

Carbohydrates are not supposed to be better than proteins for this purpose.

Given that humans share 75 per cent of the same genes as fruit flies, and have the same mtDNA genes, it is certainly an intriguing prospect that the same mutation inherited in human mtDNA may metabolise carbohydrates in a similar way.

Professor Ballard says while confirmation of this would be “another NHMRC grant away and years of surveying and testing,” the idea is worth exploring.

He says knowledge of a person’s ‘mitotype’ could help explain why a diet high in carbohydrates may induce obesity and diabetes in some but not others. Paper. (from authors) – Wen Chyuan Aw et al. Ad Genotype to phenotype: diet-by-mitochondrial DNA haplotype interactions drive metabolic flexibility and organismal fitness. PLOS Genetics, 2018 More.

Follow UD News at Twitter!

See also: New findings challenge the “neutral” theory of evolution for 95% of human genome Perhaps the most reasonable conclusion is that all of Darwinism is in a mess similar to that of speciation.

Dollo’s Evolution Law gets hit again: Stripes come and go What conceptual myths like Dollo’s Law mainly explain is this type of thing: “Museum director: Darwin’s theory of evolution not only underpins all biological science, it has an immense predictive power.” That is, increasingly, the only feature of the evolutionary landscape that Darwinian concepts shed light on is the behavior of the believers and enablers, the doubters and dissidents, and people who just can’t afford to lose their job.

and

Tortoise study does not support textbook “island rule” for evolution The researchers are unsure why giant tortoises thrived on islands but one suggestion is that they were already big and as a result, they were better able than smaller tortoises to reach remote islands.

Leave a Reply