Answer: Hugo de Vries.
- A Charles R. Darwin
- B Hugo de Vries
- C Jean B. Lamarck
- D Alfred R. Wallace
Correct answer: B. Hugo de Vries
Explanation: Hugo de Vries, studying Oenothera lamarckiana, proposed that evolution occurs through large sudden heritable changes called mutations (saltation).
A simple phylogenetic tree: a common ancestor branches into several descendant lineages over time, with each branch point marking a speciation event.
Concept context
Origin of life, Darwin's theory, natural selection, speciation, and evidence for evolution.