The diagram shows forelimbs adapted for different movements. Which interpretation is best supported by their bone arrangement?

The diagram shows forelimbs adapted for different movements. Which interpretation is best supported by their bone arrangement?

What happens to global species diversity during a speciation event?
DNA sequencing reveals a 98.8% similarity in gene sequences between humans and chimpanzees. What does this high similarity provide evidence for?
Species P and R share a similar body form. Which relationship is most strongly supported?
Which process contributed to the divergence of bonobos and common chimpanzees?
Practice IB Biology Topic A4.1 Evolution and Speciation with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for A4.1 Evolution and Speciation and mirrors Paper 1A, 1B, 2 style where relevant.
Get instant solutions, detailed explanations, and build confidence with questions aligned to IB examiner expectations.
| Species pair | Differences among homologous DNA sites |
|---|
| P–Q | 4 |
| P–R | 18 |
| Q–R | 17 |