The blood group b is almost absent in native americans, whose ancestors arrived in very small numbers about 10,000 years ago. which factor is responsible for this phenomenon?
a, migration effect b, founder effect c, bottleneck effect are the options

The right answer for the question that is being asked and shown above is that: "b, founder effect." The blood group B is almost absent in Native Americans, whose ancestors arrived in very small numbers about 10,000 years ago. The factor that is responsible for this phenomenon is the founder effect