Lecture 25 Flashcards
1
Q
human activity not shared by other species
A
cooking our own food
2
Q
characteristics of homo sapiens
A
- big brain
- small mouth and face
- protruding chin
- long limbs
- short trunk
3
Q
Genetic Code is Redundant
A
multiple codons code for the same amino acid
4
Q
Genetic Drift acts on…
A
silent site or non-synonymous substitution
5
Q
Selection acts on
A
non-synonymous substitutions
6
Q
Directional Selection favours
A
base changes that have a positive effect on protein function
-high ratio of non-synonymous to synonymous
7
Q
HAR1
A
codes for an RNA molecule that folds into a stable structure
8
Q
Where HAR1 is expressed
A
only in the brain, rapid changes in human HAR1 are likely related to the fast evolution of the human brain
