Evolution of YOU

Question 1

March of progress = the road to homo sapiens

Answer 1

• graphic representing 25 million years of human evolution
• 13 ancestor species of Homo sapiens lined up in an inevitable march towards homo sapiens
• BAD!
  1. implies continuous progression
  2. Does not show failed and extinct lineages in human evolution
  3. Does not show hybridization
  4. Gives equal weight to all species
  5. No timeframe

Question 2

ancient DNA

Answer 2

very old DNA

• DNA is better protected inside teeth and bones
• Amber is not good at preserving DNA
• use PCR to amplify
• easy to make mistakes, contaminate the sample

Question 3

homo neaderthalensis

Answer 3

s

Question 4

Denisovans

Answer 4

• discovered in 2010

- Has not yet been formally described as a species and is awaiting naming

Question 5

Neanderthal Genome Project

Answer 5

• international effort
• sequencing the entire genome of H.n.
• aDNA extracted in a clean room
• Calibrated their molecular clock by determining mutation rates between chimpanzees and modern humans