Speciation Quiz
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5 questions, one answer each
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1. Which condition is essential for speciation?
- A. A very large population
- B. No gene flow between populations
- C. Identical environments
- D. Absence of mutation
2. Which is an example of allopatric speciation?
- A. Insects breeding at different times in the same field
- B. Fish populations separated into different lakes
- C. Plants of one meadow flowering in different months
- D. Birds in one wood preferring different song patterns
3. Two groups of birds in the same forest no longer mate with each other because of different courtship songs. Which term applies?
- A. Allopatric speciation
- B. Gene flow
- C. Stabilising selection
- D. Sympatric speciation
4. What shows that two populations have become separate species?
- A. Different colours
- B. Different habitats
- C. They cannot produce fertile offspring together
- D. Different population sizes
5. Why do two isolated populations in different environments diverge?
- A. Different selection pressures change allele frequencies differently
- B. Natural selection stops acting
- C. Mutation only occurs in one population
- D. Alleles are exchanged between them