Intressanta nya fynd kring den "tänkta" evolutionen
As with humans, over 90% of animal species today likely originated 100,000–200,000 years ago; Paper offers new insights into evolution
* In genetic diversity terms, Earth’s 7.6 billion humans are anything but special in the animal kingdom. The tiny average genetic difference in mitochondrial sequences between any two individual people on the planet is about the same as the average genetic difference between a pair of the world’s house sparrows, pigeons or robins. The typical difference within a species, including humans, is 0.1% or 1 in 1,000 of the “letters” that make up a DNA sequence.
* Genetic variation — the average difference in mitochondria DNA between two individuals of the same species — does not increase with population size. Because evolution is relentless, however, the lack of genetic variation offers insights into the timing of a species’ emergence and its maintenance.https://phe.rockefeller.edu/news/wp-con ... 7kbpFzLYpE