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Flashcards in human migrations Deck (20):
1

when did erectus leave afr

1.8mya

2

when did ancestor of N and D leave afr

600kya

3

what are the potential routes of oofa

gibraltar - rocky
tunisisa - sea rough crossing
egypt - north via land bridge
ethipoia - bab el mandeb strait - short sea crossing 20km today sea levels in past were less so likely smaller

4

what is sahara pump

sahra not always been desert
withwetter climate is green - allows a pop expansion
when cliamte chnage back to dry - pop retract

5

what sahara pump thought to explain

some of the earliest oofa fossils

6

what are some of the earliest oofa fossils

Misliya - jawbone 177-194kya
skhul and qavzen - complete skels 90-120kya
but none of the caves have ev of occupations

7

what evidence for oofa given by archaeology

similarities between afr and s.asia in tools (77-34kya)
- but analysis flawed
also microblade and microlithic tools sim (35-30kya)

-- some argue fits with along coastlines model reach aus 45-50kya
or reach s,asia before toba eruption 74kya

8

what route does reosurces support

south route
follow coast
eat lot of seafood
rich resources follwo

9

what route does mtdna suggest

south route

10

what evidence have mtdna given for south route

m and n (s.asia) haplogroups derive from l3 and originate 50-70kya
only l3 grp that fits with date is l3h
in mod pops l3h in ethipoia
bab el mandeb strait

11

what route supported by y dna

north

12

what route supported by autosomal dna

north

13

what evidence from autosomal dna suggests north

225 whole genomes (egy and ethi and compare with eu/asia)
foudn more egyp haplotypes outside afr than other pop
egy pop show more recent split from west afr and non afr than ethiop

14

what date given to the oofa by non controversial migr

70kya

15

how is toba eruption linked to the migr

73kya
pot cause climatic change
fallout affected muchb of s.asia and e. afr
but doesnt fit with the genetics - too far abck

16

what have mtdna studes shown about migr into eu

11 haplogroups so 11 migr
all originate far east
founder analysis revealed come into eu at diff times

17

when did fu et al 2016 date the initial migr into eu

45kya

18

what evidence is there that multiple waves of migr

as during the last glacial maximum only in iberia - 19kya
and evidence initial migr dont contribute to mod pop eg oases
45-14kya all from the initial migr
after 14kya waves from near east

19

what evidecne for there of migr from near easr at 14kya

villabruna cluster contributions from near easterners
and 13kya switz fossil share excess alleles with east asians

20

what evidence is there for back migration

33kya romanian fossil has basal version of u6 haplogroup
derived versions of this haplogroup found in n afr