The diagram shows two chromosomes from one cell. What are the lines labelled P pointing at?
- Athe site of alleles made up of two or more genes which are always the same
- Bthe site of alleles made up of two or more genes which might be different
- Cthe site of genes made up of two or more alleles which are always the same
- Dthe site of genes made up of two or more alleles which might be different