molecular evolution lecture - 16/2

Question 1

define molecular evolution

Answer 1

evolution seen in DNA/RNA and proteins

Question 2

problems with using amino acid/base chains to compare how closely related organisms are

Answer 2

‘multiple hit’ mutations, changes which have been forgotten about
hard to determine the common ancestors

Question 3

4 different amino acid classes

Answer 3

(loosely, some in multiple categories)
hydrophobic, neutral, positive, negative

subs more common within groups than between groups

Question 4

molecular clocks

Answer 4

method of observing the no. of changes between base sequence to determine how long ago a common ancestor lived
controversial