Question

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?

Answer 1

Founder effect

Step-by-step explanation:

I had this question asked on a test and got a 5/5

Answer 2

The factor that is responsible for the phenomenon of the blood group B being almost absent in Native Americans whose ancestors arrived in very small numbers about 10,000 years ago would be called the 'founder effect'.