CAIE A-Level Biology A2 17.3.2 Dna Evidence for Evolution Questions

any three from:

1 compare sequences (of DNA) ;

2 the more similar the sequences the more, closely related the species / recent the common ancestor ;
ora

3 over time mutations accumulate or less time fewer mutations occurred ;

4 ref. to bioinformatics / software / database ;

5 AVP ;
e.g. molecular clock / constant rate of mutation

e.g. mtDNA has no crossing over e.g. the percentage similarity can be used to build a phylogenetic tree