Human Family Tree video worksheet
How many generations, and years, back in human history do we find Scientific Eve? -
correct answer-6,000 Generations & 200,000 Years
Where do we find the root of the Human Family Tree? - correct answer-Eastern & Southern
Africa
What is used as the genetic markers to trace the history of the human family tree? - correct
answer-DNA
Genetically speaking, how similar are all members of the human family? - correct
answer-99.9%
What are haplogroups, and how are they determined? - correct answer-Haplogroup = unique
genetic population (line of descent)
Male groups are determined using the Y Chromosome, Female groups are determined
using mitochondrial DNA
How can mutations of mtDNA (mitochondrial DNA) be used as molecular clocks? - correct
answer-Mutations occur at a steady rate. If we know the rate and the number of changes,
then we can determine relative times
What haplogroup does Carrie belong to? - correct answer-Haplogroup J
How long did modern humans exist before they started to journey out of Africa? - correct
answer-140,000 years
130,000 years ago there was a catastrophic drought in Africa. What do scientists believe the
population size of modern
humans was then? - correct answer-2,000 Individuals
Why do scientists believe some groups of modern humans decided to leave Africa? - correct
answer-Climate change - extreme drought
when were the First Steps out of Africa? - correct answer-about 50,000 years ago
What haplogroup does Tau belong to? - correct answer-M Star
What do recent ideas suggest about how Tau's ancestor travelled from Africa to the Arabian
peninsula? - correct answer-They walked! There was a shallow, 17-mile water basin that
they crossed on foot
Where did Tau's ancestors migrate to after leaving Africa? - correct answer-Southeast Asia,
then Australia
How many generations, and years, back in human history do we find Scientific Eve? -
correct answer-6,000 Generations & 200,000 Years
Where do we find the root of the Human Family Tree? - correct answer-Eastern & Southern
Africa
What is used as the genetic markers to trace the history of the human family tree? - correct
answer-DNA
Genetically speaking, how similar are all members of the human family? - correct
answer-99.9%
What are haplogroups, and how are they determined? - correct answer-Haplogroup = unique
genetic population (line of descent)
Male groups are determined using the Y Chromosome, Female groups are determined
using mitochondrial DNA
How can mutations of mtDNA (mitochondrial DNA) be used as molecular clocks? - correct
answer-Mutations occur at a steady rate. If we know the rate and the number of changes,
then we can determine relative times
What haplogroup does Carrie belong to? - correct answer-Haplogroup J
How long did modern humans exist before they started to journey out of Africa? - correct
answer-140,000 years
130,000 years ago there was a catastrophic drought in Africa. What do scientists believe the
population size of modern
humans was then? - correct answer-2,000 Individuals
Why do scientists believe some groups of modern humans decided to leave Africa? - correct
answer-Climate change - extreme drought
when were the First Steps out of Africa? - correct answer-about 50,000 years ago
What haplogroup does Tau belong to? - correct answer-M Star
What do recent ideas suggest about how Tau's ancestor travelled from Africa to the Arabian
peninsula? - correct answer-They walked! There was a shallow, 17-mile water basin that
they crossed on foot
Where did Tau's ancestors migrate to after leaving Africa? - correct answer-Southeast Asia,
then Australia
