Question

question 30
1 pts
in light of the \out - of - africa\ hypothesis, which of the following is a parsimonious reason why species like homo neanderthalensis, homo floresinensis, and homo erectus do not exist today?
extensive gene flow between human populations led to a blending of traits that resulted in the evolution of homo sapiens.
as modern homo sapiens developed new and more accurate hunting skills they were able to hunt other hominin species to extinction.
modern homo sapiens out - competed and replaced other hominin species as they migrated around the world.
climate change in africa caused the extinction of all hominin populations except for the ones that gave rise to modern homo sapiens.

Explanation:

The "out - of - Africa" hypothesis posits that modern Homo sapiens originated in Africa and then migrated to other parts of the world. Parsimony in science means choosing the simplest explanation.

• Option 1: Gene flow leading to the evolution of Homo sapiens is not the main reason for the extinction of other hominins according to the "out - of - Africa" hypothesis.
• Option 2: Hunting other hominins to extinction is a more complex and less parsimonious explanation compared to competition.
• Option 3: Modern Homo sapiens out - competing and replacing other hominin species as they migrated is a simple and parsimonious explanation. As they spread, they likely had advantages (e.g., better tools, social organization) that allowed them to out - compete local hominin populations.
• Option 4: Climate change in Africa affecting only non - Homo sapiens hominins is not in line with the "out - of - Africa" migration and competition concept.

Answer:

Modern Homo sapiens out - competed and replaced other hominin species as they migrated around the world.