Speciation
Biology ⇒ Evolution and Diversity
Speciation starts at 9 and continues till grade 12.
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A population of insects is separated by a newly formed river. Over time, the two groups develop different mating behaviors and can no longer interbreed. What type of speciation has occurred?
Describe how genetic drift can contribute to speciation, especially in small populations.
Describe how polyploidy can lead to speciation in plants.
Describe the difference between prezygotic and postzygotic barriers, giving one example of each.
Describe the role of natural selection in the process of speciation.
Explain the concept of reproductive isolation and its importance in speciation.
A group of birds is blown by a storm to a distant island. Over generations, they evolve into a new species. What is this an example of? (1) Sympatric speciation (2) Allopatric speciation (3) Artificial selection (4) Hybridization
A population of insects is separated by a newly formed river. Over time, the two groups develop different mating behaviors and can no longer interbreed. What type of speciation has occurred?
A group of birds is blown by a storm to a distant island. Over generations, they evolve into a new species. What is this an example of? (1) Sympatric speciation (2) Allopatric speciation (3) Artificial selection (4) Hybridization
Which of the following best defines speciation? (1) The process by which new species arise (2) The extinction of a species (3) The migration of individuals between populations (4) The adaptation of organisms to their environment
Which of the following best describes reproductive isolation? (1) The inability of individuals from different populations to interbreed successfully (2) The migration of individuals between populations (3) The adaptation of organisms to their environment (4) The extinction of a species
Which of the following is a postzygotic reproductive barrier? (1) Habitat isolation (2) Gametic isolation (3) Hybrid breakdown (4) Temporal isolation
Fill in the blank: __________ is the process by which a single species evolves into several different forms that live in different ways.
Fill in the blank: __________ isolation occurs when two species breed at different times of the year.
Fill in the blank: The __________ effect occurs when a small group of individuals becomes isolated from a larger population and forms a new species.
Fill in the blank: The formation of a new species due to a physical barrier such as a mountain range is called __________ speciation.
True or False: Allopatric speciation requires geographic isolation.
True or False: Hybrid inviability is a postzygotic barrier to reproduction.
True or False: Hybrid sterility is a prezygotic barrier.
True or False: Mechanical isolation is a prezygotic barrier.
