Unit 7: Natural Selection (part 1)
19 review questions with answers for Unit 7: Natural Selection (part 1). Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.
The mechanism of evolution that produces adaptations?
- Genetic Drift
- Natural SelectionRight answer
- Bottleneck Effect
- Founder Effect
All 19 questions and answers
The mechanism of evolution that produces adaptations?
Answer: Natural Selection
Darwin's term for the ability to survive and reproduce?
Answer: Fitness
A heritable trait that increases an organism's fitness?
Answer: Adaptation
Selective breeding by humans for specific traits?
Answer: Artificial Selection
Type of selection that favors one extreme phenotype?
Answer: Directional Selection
Type of selection that favors the average phenotype?
Answer: Stabilizing Selection
Type of selection that favors both extremes?
Answer: Disruptive Selection
All the alleles in all the individuals in a population?
Answer: Gene Pool
Random change in allele frequencies, usually in small populations?
Answer: Genetic Drift
Drift occurring when a small group starts a new population?
Answer: Founder Effect
Drift occurring after a disaster drastically reduces population size?
Answer: Bottleneck Effect
Movement of alleles into or out of a population (migration)?
Answer: Gene Flow
The state where allele frequencies do not change (no evolution)?
Answer: Hardy-Weinberg Equilibrium
Structures with similar anatomy but different functions (common ancestor)?
Answer: Homologous Structures
Structures with different anatomy but similar functions, not inherited from a common ancestor?
Answer: Analogous Structures
Evolution of similar traits in unrelated species (e.g., wings)?
Answer: Convergent Evolution
Remnants of structures that served a purpose in ancestors (e.g., tailbone)?
Answer: Vestigial Structures
The most reliable evidence for common ancestry?
Answer: Molecular/DNA Sequences
A diagram showing evolutionary relationships?
Answer: Phylogenetic Tree / Cladogram
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.