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Printable Handouts
Navigable Slide Index
- Introduction
- Outline
- Researchers & Native American communities
- Mutually beneficial relationships
- DNA proof supports Metlakatla oral history
- Different evolutionary path for mitogenomes
- Diversifying Science
- Bellwood's Triangulation
- A classic article using a multidisciplinary approach
- Language families in the Americas
- Multidisciplinary approach by Franz Boas
- Greenberg's model does not fit genetic data
- Classic genetic studies
- Genomic tools
- Genetic variation & population structure
- Intra-continental population Structure
- Serial Founder Model
- Issue: poor sampling in N. America
- Issue: non-Indigenous admixture
- Ancient DNA analysis
- Mitochondrial haplogroup frequency distribution
- Stability in mtDNA haplogroup frequencies
- New sequencing technology of ancient DNA
- Evolutionary history of indigenous peoples
- Genome wide data & strategic ancient individuals
- Anzick genetic relationships
- Two models consistent with the Anzick data
- Reconstructing Native American population history
- Three distinct streams of gene flow
- The genetic prehistory of the New World Arctic
- Geographic origins of Native Americans
- Insights into the initial peopling of the Americas
- Nine early founding mitochondrial genomes
- Earliest archaeological sites
- The Beringian Incubation Model
- Other private variants in the Americas
- Out of Beringia
- mtDNA does not fit the Beringian model
- Possible routes of migration
- Stability in mtDNA haplogroup frequencies
- Admixture in the Pacific Northwest
- Serial Founder Model - data from the Americas
- Timing of admixture
- Multidimensional scaling plot
- Uniparental genomic regions from N. America
- Summary
Topics Covered
- Ethical & social implications of genetic research in indigenous communities
- A multidisciplinary approach to infer evolutionary history
- Genetic variation studies in Native Americans
- Ancient DNA research to bypass genomic effects of European colonization
- Non-indigenous admixture in Native Americans
Talk Citation
Malhi, R. (2015, April 21). Genetic variation in North America [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved November 21, 2024, from https://doi.org/10.69645/GXLN3617.Export Citation (RIS)
Publication History
Financial Disclosures
- Prof. Ripan Malhi has not informed HSTalks of any commercial/financial relationship that it is appropriate to disclose.
Other Talks in the Series: Human Population Genetics II
Transcript
Please wait while the transcript is being prepared...
0:00
Hello, my name is Ripan Malhi,
and I am an associate professor
in Anthropology at the University
of Illinois at Urbana-Champaign.
In this lecture, I will provide you
with scientific results and findings
about genetic variation
of indigenous peoples
of North America.
Specifically, I will focus on
genetic variation in modern people
through the analysis of DNA
from fresh tissue, like blood
or saliva,
and also genetic variation
in ancient peoples
through the analysis
of ancient DNA, or degraded DNA,
from ancient tissue
such as skeletal remains.
0:32
Here is an outline for the lecture
to help orient you.
First, before discussing
any DNA results,
I want to talk about the ethical
and social implications
of genetic research
with indigenous communities.
Then I'll focus on how
many of the research studies
focused on genetic variation
in North America
have taken a multidisciplinary
approach,
especially when investigating
the initial people of the Americas.
And then, for a majority
of the lecture,
I'll highlight research results
on patterns of genetic variation
of indigenous populations
of the Americas
and how we can use this information
to investigate
the evolutionary history
of Native Americans.
1:11
Before getting into the details
of genetic studies,
it is important to discuss
the ethical and social implications
of research with indigenous
communities.
In the past, Native Americans
have had difficult encounters
with science,
and, in some cases,
this antagonistic relationship
continues today.
Often, the lack of communication
by scientists
to the community members
involved in the study
contributes to this friction.
A good example of this is when
Arizona researchers
collected blood samples
from the Havasupai Tribe
to study genetic contributions
to Type 2 diabetes.
Ultimately, the blood samples
were used for research of other
diseases
as well as migration history.
When members
of the Havasupai Tribe discovered
that their blood was being used
for research beyond Type 2
diabetes,
they brought a lawsuit against
the Arizona Board of Regents.
This case was settled in 2010,
where community members received
$700,000 plus other benefits.
This case raised many questions
about how research is conducted
with indigenous communities,
and the case was even depicted
in a play called Informed Consent.