Each of these contestants has won against the other on Quiz Show before. But this time, we will truly find out who is the best!

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Sources:
Toothprints:
https://www.washingtonpost.com/news/the-watch/wp/2015/02/13/how-the-flawed-science-of-bite-mark-analysis-has-sent-innocent-people-to-jail/?utm_term=.f47698cfaf65
https://www.forensicmag.com/article/2015/07/end-bite-mark-analysis
Superglue:
https://www.soinc.org/sites/default/files/uploaded_files/forensics/For_supergluing.pdf
http://www.crimemuseum.org/2009/07/20/whats-better-than-dusting-for-fingerprints/
https://dps.mn.gov/divisions/bca/bca-divisions/forensic-science/Pages/forensic-programs-crime-scene-superglue.aspx
https://www.ncbi.nlm.nih.gov/pubmed/17680999
Mendelian traits:
http://learn.genetics.utah.edu/content/basics/observable/
https://academic.oup.com/jhered/article-abstract/28/12/425/772646/COMPLICATIONS-IN-EAR-GENETICS?redirectedFrom=PDF
https://academic.oup.com/jhered/article-abstract/66/3/179/926458/No-evidence-for-a-genetic-basis-of-tongue-rolling?redirectedFrom=PDF
http://genetics.thetech.org/ask/ask135
Fainting:
http://www.telegraph.co.uk/news/worldnews/europe/italy/7914746/Scientists-investigate-Stendhal-Syndrome-fainting-caused-by-great-art.html#
https://www.psychologytoday.com/blog/in-excess/201403/having-art-attack
http://www.medicalnewstoday.com/articles/182524.php?page=2
http://www.mayoclinic.org/diseases-conditions/vasovagal-syncope/expert-answers/micturition-syncope/faq-20058084
http://www.sciencedirect.com/science/article/pii/S0896697405800994
http://pediatrics.aappublications.org/content/91/4/836
Light:
http://www.pnas.org/content/111/50/E5445.abstract
http://www.sci-news.com/biology/science-humans-can-see-infrared-light-02313.html
Pykrete:
https://www.igsoc.org/journal/1/3/igs_journal_vol01_issue003_pg95-104.pdf
http://io9.gizmodo.com/5839623/the-unmeltable-weapon-that-could-have-changed-the-course-of-world-war-ii

Images:
https://commons.wikimedia.org/wiki/File:Upper_jaw.jpg
https://commons.wikimedia.org/wiki/File:Blood_vessels_in_the_human_arm.png
https://commons.wikimedia.org/wiki/File:Fingerprint_detail_on_male_finger.jpg
https://commons.wikimedia.org/wiki/File:Ear_tattoo_(2596093).jpg
https://commons.wikimedia.org/wiki/File:Rolled_tongue_flikr.jpg
https://commons.wikimedia.org/wiki/File:Bendable_thumb.jpg
https://commons.wikimedia.org/wiki/File:Wang_Ximeng_-_A_Thousand_Li_of_River_(Bridge).jpg