![](/static/f79995a8/assets/icons/icon-96x96.png)
![](https://lemmy.world/pictrs/image/0d5e3a0e-e79d-4062-a7bc-ccc1e7baacf1.png)
You may have missed the point. Even if the haline circulation is over turned with fresh water, Europe will still trend warmer on a wider delta and different places will see an increase in seasonal delta but as it stands there will be a last winter for everywhere. Full stop. It is a time horizon question that remains.
It is possible, but genetics is far more complicated than this. There are also the epigenetic factors for gene expression that is a field of ongoing research. Nothing is ever actually as simple as the example but it is a good example for illustration of the concept.