Which condition is essential for natural selection to result in a new species?
What has happened when a flower’s color has been naturally selected to attract a pollinator that has developed special structures to reach the flower’s nectar?
The theory of continental drift hypothesizes that Alaska and Russia slowly drifted apart after being a single land mass. The mice on the two continents, although very similar, show numerous genetic differences. Which factor is probably the most important in creating these differences?
In genetic drift, allele frequencies change because of