Indicate whether each scenario would promote or prevent speciation in humans Pla
ID: 134370 • Letter: I
Question
Indicate whether each scenario would promote or prevent speciation in humans Plane tickets are subsidized by the United Nations, leading to essentially free international travel Promote Speciation Prevent Speciation Plane tickets are subsidized by the United Nations, leading to essentially free international travel A small population of humans establishes a colony on Mars and no more spaceships arrive World peace makes it safe to travel anywhere in the world World peace makes it safe to travel anywhere in the world Nuclear warfare destroys 99% of the human population, leaving only small pockets of survivors Nuclear warfare destroys 99% of the human population, leaving only small pockets of survivors A small population of humans establishes a colony on Mars and no more spaceships arriveExplanation / Answer
Allopatric speciation occurs by geographic isolation.
Sympatric speciation occurs by seasonal, behavioral, or mechanical isolation.
Promote speciation:
i. Nuclear warfare destroys 99% of the human population, leaving only small pockets of survivors (Funder effect)
ii. A small population of humans establish colonies on Mars and no more spaceships arrive.
Prevent speciation:
i. Plane tickets are subsized by the United Nations, leading to essentially free international travel.
ii. World peace makes it safe to travel anywhere in the world.