Question

if the small groups of viking explorers in greenland and north america had survived and given rise to new populations, such a scenario would be an example of
multiple choice
gene flow from continent to continent.
genetic drift among the original viking explorers.
the bottleneck effect.
directional selection.

Explanation:

Gene flow involves the transfer of genetic material from one population to another. Genetic drift is a change in allele - frequencies due to chance events in small populations. The bottleneck effect occurs when a population is greatly reduced in size. Directional selection is a type of natural selection where an extreme phenotype is favored over others. In this scenario, if small groups of Viking explorers survived and formed new populations, it represents genetic drift among the original small - sized groups of Viking explorers.

Answer:

B. genetic drift among the original Viking explorers