24 Nov '17 15:10>
http://www.bbc.com/news/science-environment-42103058
A new species has emerged and we saw it happen.
A new species has emerged and we saw it happen.
Originally posted by @moonbusyes, indeed.
http://www.bbc.com/news/science-environment-42103058
A new species has emerged and we saw it happen.
Originally posted by @moonbusyes and don't forget TRANSPERMIA !!
It certainly indicates that evolution proceeds by multiple mechanisms, not only natural selection and genetic mutation.
Originally posted by @moonbuswell, just the combination of these mechanisms;
It certainly indicates that evolution proceeds by multiple mechanisms, not only natural selection and genetic mutation.
Originally posted by @moonbusnatural selection cannot work without genetic variation but natural selection by itself cannot produce genetic variation. So there must be at least one more mechanism to produce that genetic variation first so that natural selection can then act on it else no evolution. That gives just three possible combinations.
Three separate mechanisms gives a total of seven possible combinations.