M7 L25 Flashcards
(6 cards)
1
Q
homology
A
any characteristic that is derived from a common ancestor
eg. vertebrate forelimbs
2
Q
analogy
A
similarities between organisms that were not in the last common ancestor
eg. wings
3
Q
purifying/negative selection
A
deleterious variation is removed from population
4
Q
synonymous base substitutions
A
changes in base that do not cause changes in amino acid
5
Q
dayhoff classes
A
MILV went to a STAGParty, DEQN went home WYF HRK C stayed home and studied
6
Q
blosum62 matrix
A
scores amino acid similarity by how frequently they replace each other
