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WABiologyQuick questions
Unit 3: Continuity of Species
Quick questions on Evolution and speciation: WACE Year 12 Biology
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is natural selection?Show answer
Natural selection follows a clear logic, often summarised as variation, selection pressure, differential survival and reproduction, and inheritance.
What are isolating mechanisms?Show answer
Reproductive isolation can be prezygotic (preventing mating or fertilisation) or postzygotic (acting after fertilisation):
What is evidence for evolution?Show answer
You should be able to cite supporting evidence: the fossil record showing transitional forms and change over time, comparative anatomy (homologous structures from common ancestry, analogous structures from convergent evolution, and vestigial structures), comparative embryology, biogeography, and molecular evidence such as similarities in DNA and protein sequences that allow phylogenetic trees to be built.
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