Human Evolution Flashcards
Mutations in what genes are proportional to the elapsed time since divergence from the common ancestor?
Orthologous genes
Mutations in what genes are proportional to the elapsed time since the ancestral gene was duplicated?
Paralogous
There is what type of relationship between the accumulation of mutations and the amount of time that has passed in the evolutionary timescale?
Somewhat a linear relationship
What are anthropoids?
A diverse group of the primate order with common human and ape features, all derived from an ancestral primate
What percentage of the genomes between human and chimpanzees are different?
1.2%
Does DNA coding for ribosomal RNA evolve more quickly or very slowly?
Very slowly
Does DNA coding for mitochondrial DNA evolve more quickly or very slowly?
More quickly
What are the two models that try to identify and rationalise the evolution of modern humans?
- Out of Africa model
- Multiregional model
Out of the two models that try to identify and rationalise the evolution of modern humans, which is more widely accepted?
The Out of Africa model
What is the ‘Out of Africa’ model of modern human evolution?
Homo sapiens evolved in Africa and then migrated out of Africa
What is the ‘multi-regional’ model of modern human evolution?
Homo sapiens evolved in multiple regions over a prolonged period
