Mitochondrial DNA sequence to 4 shaft weaving patterns
Mitos is an exploration of 4-shaft weaving patterns generated from isolating and sequencing my mitochondrial DNA then mapping the mtDNA sequence to threading and treadling drafts.
A big motivation for me is the significance of the mitochondrial DNA (mtDNA). All of our mitochondria come from our mothers because the mitochondria live in the cytoplasm and when an egg is fertilized, its cytoplasm comes from the egg and not the sperm. Furthermore, in this mitochondrial DNA are hypervariable regions (HVR) which contain mutations that have been shown to have high correlation with one’s ethnicity and/or geographic origin. Hence, mitochondrial DNA has been crucial for studying one’s maternal ancestry. [1,2]
After going through the process of isolating and sequencing my DNA  from my cheek cells, I was awestruck by how the mtDNA that my mom passed to me captures how I fit in this vast scale of time and human history. I felt moved to make art with this newfound appreciation and inspiration. After learning that the root word of mitochondrion is “mitos” which is the Greek word for “thread” , weaving felt like a natural medium to manifest my personal ancestral data.
Process and Artifacts
To visualize my mtDNA sequence as a weaving pattern, I wrote a python script to map the resulting sequences consisting of A, T, G, C to the 4 shafts of a threading pattern and generate drawdowns based on different treadling drafts. I represented the patterns as matrices based on the equation from Lea Albaugh’s Strange Loop talk “It’s Just Matrix Multiplication: Notation for Weaving” where she showed how weaving drawdown is essentially a product of the treadling, transpose of the tie-up, and threading matrices.  The following figures show sample weaving patterns generated. The script used to generate these images could be found in: https://github.com/kongsally/Mitos
My mtDNA is part of the M8 haplogroup which is common among East Asians. I was curious how much I differed from the “Mitochondrial Eve” or the L0 haplogroup where all haplogroups derive from. The differences in the visual representation were subtle, but it was still interesting to see some common motifs that were slightly shifted or elongated.
These resulting drawdowns gave me a good idea of the graphical quality of the pattern. However, it lacked conveying the textural quality that would arise from the weaving structure of the pattern. I decided to create 3D models of the weave using a visual effects software called Houdini. Houdini allows me to inject custom python code along with its other geometry processing nodes. I reused my python script to calculate the drawdown matrix then I used its values to either raise or lower the curves for the warps and wefts.
Using these curves, I then resampled points along the curves to generate a tubular mesh to encapsulate the curves.
After which I mapped the 3D mesh to a cloth simulation to get a physical sense of the pattern.
From visualizing my mtDNA driven weaving pattern and simulating it wrapping a body, I was inspired to physically manifest this project. I finally decided to purchase a second hand 42” Schacht 4-shaft floor loom and wove the following piece.
Now I can be embraced by the gift of mitochondrial DNA passed down by my long lineage of mothers.
 Yin, Steph. “Why Do We Inherit Mitochondrial DNA Only From Our Mothers?” The New York Times, 23 June 2016. NYTimes.com, https://www.nytimes.com/2016/06/24/science/mitochondrial-dna-mothers.html.
 Lee, Chih, et al. “Inferring Ethnicity from Mitochondrial DNA Sequence.” BMC Proceedings, vol. 5, no. Suppl 2, May 2011, p. S11. PubMed Central, https://doi.org/10.1186/1753-6561-5-S2-S11.
 Wallace, Douglas & Chalkia, Dimitra. (2013). Mitochondrial DNA Genetics and the Heteroplasmy Conundrum in Evolution and Disease. Cold Spring Harbor perspectives in biology. 5. 10.1101/cshperspect.a021220.
 GENEWIZ from Azenta | Sanger Sequencing. https://www.genewiz.com/en/Public/Services/Sanger-Sequencing. Accessed 22 Sept. 2023.
 Mitochondria (n.). Etymology. (n.d.). https://www.etymonline.com/word/mitochondria
 “It’s Just Matrix Multiplication’: Notation for Weaving” by Lea Albaugh. www.youtube.com, https://www.youtube.com/watch?v=oMOSiag3dxg. Accessed 22 Sept. 2023.
 Houdini - 3D Modeling, Animation, VFX, Look Development, Lighting and Rendering | SideFX. https://www.sidefx.com/. Accessed 22 Sept. 2023.