27 - Human Evolution

Question 1

What are the species in the Homo genus?

Answer 1

• homosapiens
• homo denisova
• homo neanderthalensis

Question 2

What are the species in the hominidae family?

Answer 2

• gorila
• homo
• bonobos
• chimpanzees
• organutangs

Question 3

What is in the homininae subfamily?

Answer 3

• gorillas
• homo
• bonobos
• chimps

Question 4

What is in the hominini tribe?

Answer 4

• humans
• bonobos
• chimpanzees

Question 5

Why is there more diversity between modern sub saharan africans than all other humans?

Answer 5

The group that left Africa may have been as small as 1000

Question 6

Where were Neanderthals found?

Answer 6

• europe
• some in Asia

Question 7

Why were Neanderthals only in south Europe?

Answer 7

• North Europe was covered in glaciers for a long time

Question 8

When did the initial introgression of Neanderthal DNA happen?

Answer 8

• once humans left Africa

Question 9

Explain Neanderthal and Denisovans habitat

Answer 9

They had a slight overlap

Question 10

Wha is the common ancestor of humans, neanderthals and denesovans?

Answer 10

homo erectus

Question 11

How can we tell evolution is happening in humans?

Answer 11

• compare the allele frequencies of two or more populations

Question 12

What is the effect of Neanderthal intergression on the CCR5-delta32 allele?

Answer 12

• produces a membrane receptor on our WBC
• It is the target of HIV
• deletion causes HIV to not be able to bind
• negative as they are at risk of other viruses now

Question 13

Explain genetic engineering and evolutionary medicine

Answer 13

• viral vector inserts allele copy
• incorporated into genome
• can excise old allele, so only new remains
• this is not passed to next generation