Determine which process of evolution is likely impacting the population below. Once you have determined the process, briefly explain why you selected that process.

1. In 1955, Ronald Ubba set up a long-term study cataloging the blood types of chimpanzees in Gombe National Forest. Initially, there were no individuals with blood type B. Five generations later, a new neighboring group of chimpanzees moved into the area and began exchanging mating partners with the original study population. Ronald Ubba found that there were now several members with blood type B. Which process of evolution is likely affecting this population?

Gene Flow, a process where alleles are exchanged between populations, is likely impacting the chimpanzee population with the introduction of new mating partners and the appearance of blood type B individuals, reflecting changes in allele frequencies.

Founder Effect and Genetic Drift can lead to unique traits in a population not directly due to natural selection, as seen in the emergence of blood type B individuals after the neighboring chimpanzee group's arrival in Gombe National Forest.

Natural Selection operates based on advantageous phenotypes and can cause changes in allele frequencies over time, showing how environmental factors and mating patterns influence evolutionary processes in populations.

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