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'.
Hypothesis.
A Hypothesis is an estimation of what might happen and the student's observation before moving on to investigate.
Explanation:
three new organisms ,x,y and z were discovered by a group of zoologists they observed that organisms x and y depend on organisms z for food . organisms z does not depend on oraganisms for food . oraganisms x is the . only one that can move on its own
