Is this Evolution?
A farmer has a flock of white sheep. He puts a black ram in the flock and over a few years notices that the number of black and grey sheep in the flock has increased.
Is this evolution?
What are the sheep evolving into?
The consensus is: NO, it is not evolution; or not as Darwin envisaged it, as ascent of all living from a common microbial ancestor. Only if you reduce the definition to "change over time" or "a change in allele frequency" can it be called evolution.
- G CLv 7hace 4 añosRespuesta preferida
Shows kind after kind. For evolution to be true, they would have to be evolving into another creature, yet they were all sheep.
- Anónimohace 4 años
I'm not an authority on ovine genetics but it is definitely possible that there would be no grey sheep, they would be either black or white. Or maybe spotted
Since the allele frequency of the flock has changed, it would be biological evolution. You don't get to redefine it as "microevolution" to suit your own agenda.
- hace 4 años
The sheep are simply expressing a different phenotype. I wouldn't call that evolution at all.
- ?Lv 4hace 4 años
No. There is no Selective Pressure in the case as described. Now, if the farmer kills and eats only white sheep, then it is. In that case the flock is evolving into black and gray sheep. If the farmer kills and eats white and gray sheep, then the flock is, of course, evolving to black sheep.
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- SymosLv 7hace 4 años
An extremely limited version. Basically the genetics of black and white fur merging
- JazSincLv 7hace 4 años
Yes. The allele frequencies in the population have changed over time.
- Gaia’s GardenLv 7hace 4 años
No, that's just normal gene mixing.
- Good without GodLv 4hace 4 años
nope, Google would do you well.