What you’ll learn3 learning objectivesChoose one objective for a focused lesson, or study the complete topic.17.3.1Evolution through gene pool change• Theory of evolution: formation of new species from pre-existing species over time through gene pool changesSyllabus objective17.3.2DNA evidence for evolution• DNA sequence data showing evolutionary relationshipsSyllabus objective17.3.3Speciation through genetic isolation• Speciation through genetic isolation:- Geographical separation (allopatric speciation)- Ecological and behavioural separation (sympatric speciation)Syllabus objective