A4.1 Evolution and Speciation (HL)
16 review questions with answers for A4.1 Evolution and Speciation (HL). Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.
Cumulative change in heritable traits of a population over time?
- EvolutionRight answer
- Speciation
- Gradualism
- Polyploidy
All 16 questions and answers
Cumulative change in heritable traits of a population over time?
Answer: Evolution
Total collection of all alleles within an interbreeding population?
Answer: Gene Pool
Random change in allele frequencies, most impactful in small populations?
Answer: Genetic Drift
Selection that favors one extreme phenotype over others?
Answer: Directional Selection
Selection that favors the average phenotype and acts against extremes?
Answer: Stabilizing Selection
Selection that favors both extremes, potentially splitting a population?
Answer: Disruptive Selection
General term for the splitting of one species into two or more new species?
Answer: Speciation
Speciation caused by geographic isolation/physical barriers?
Answer: Allopatric Speciation
Speciation occurring within the same geographic area?
Answer: Sympatric Speciation
Isolation due to different mating rituals or courtship songs?
Answer: Behavioral Isolation
Isolation due to populations breeding at different times/seasons?
Answer: Temporal Isolation
Having more than two sets of chromosomes; can cause abrupt speciation in plants?
Answer: Polyploidy
Rapid evolution of multiple species from one ancestor to fill various niches?
Answer: Adaptive Radiation
Evolution of similar traits in unrelated species due to similar environments?
Answer: Convergent Evolution
Theory that evolution occurs via slow, steady, continuous change?
Answer: Gradualism
Theory of long stable periods interrupted by sudden, rapid change?
Answer: Punctuated Equilibrium
Play it as a class game
Play this set opens it in splycr, where you can host it for your class straight away. Hosting needs no account: put the room code on the projector, and students join from a phone with the code and their first name. Each question plays as multiple choice, and the three wrong options are other answers from the same set.