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Tutor HuntTest QuestionsBiology QuestionsYear 10 Biology Questions

 

Speciation (biology Only) (GCSE Biology)

The following is a GCSE Biology test covering 'Speciation (biology Only)' from the broader topic Inheritance, Variation And Evolution. The test is geared towards the AQA exam board style syllabus.
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Which pattern of natural selection would best favour the evolution of two distinct beak sizes from an originally intermediate-sized population when small and large seeds are available but intermediate seeds are rare?
How does polyploidy create reproductive isolation in plants?
Which scenario best illustrates reproductive (behavioral) isolation?
Which mechanism provides new genetic variants that natural selection can act on and so can lead to speciation over time?
What is the role of natural selection in speciation?
Which is the most likely outcome when two previously isolated populations come back into contact but have evolved different mating signals?
What is a postzygotic isolating mechanism?
Why can speciation be considered a gradual process in many cases?
What effect does hybrid sterility have on speciation?
Which example best demonstrates adaptive significance of a morphological adaptation leading to speciation?
If a small island is colonised by a few individuals from a mainland population, which processes are most likely to promote rapid divergence of the island population?