Genetic Evidence (Grade 12 NSC Matric Life Sciences): Flashcards
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% genes shared by modern humans
% genes shared by modern humans
99.9%
% genes shared by humans & chimpanzees
% genes shared by humans & chimpanzees
98.8%
Humans' closest genetic relative among apes
Humans' closest genetic relative among apes
Chimpanzees
How mitochondrial DNA is inherited
How mitochondrial DNA is inherited
Only from mothers
Why mtDNA called 'molecular clock'
Why mtDNA called 'molecular clock'
Changes at predictable rate
Human-chimp divergence time (mya)
Human-chimp divergence time (mya)
2.5-4.6 million years ago
Human-ape common ancestor time (mya)
Human-ape common ancestor time (mya)
5-6 million years ago
What phylogenetic trees show
What phylogenetic trees show
Evolutionary relationships & divergence times
Gorilla split from human-chimp lineage (mya)
Gorilla split from human-chimp lineage (mya)
6.2-8.4 million years ago
Did humans evolve FROM modern chimpanzees
Did humans evolve FROM modern chimpanzees
No, both evolved from common ancestor