Edexcel International AS and A level Biology XBI11/YBI11 · 4.20.iii
Reproductive isolation and new species
- Code
- 4.20.iii
- In
- 4.20 Allele frequency and speciation
- Topic
- U2 Cells, Development, Biodiversity and Conservation
- Course
- International AS and A level Biology XBI11/YBI11
- Board
- Edexcel
Grade boundaries·Edexcel command words
Codes and titles are read by a script from Edexcel's published specification and have not been checked by a person. What each point covers is in the specification itself: Edexcel’s specification.
Points in 4.20 Allele frequency and speciation
- 4.20.i Hardy-Weinberg equation
- 4.20.ii Mutation, natural selection and allele frequency
- 4.20.iii Reproductive isolation and new species