Does Betty actually have the serial killer genes?
Yes, Betty does have the serial killer gene — much to her disappointment.
Back then, it was unclear if we could believe Alice, but now Betty knows for a fact that she possesses the monoamine oxidase A (MAOA) gene.
CDH13 was identified as a ADHD-related gene in 2008, and it is one of the most important genes associated with ADHD,26 which is a disorder strongly associated with violent criminality.
Betty Cooper's (played by Lili Reinhart) sister, Polly Cooper (played by Tiera Skovbye), explains that Betty was told at a young age that she possesses something called "the serial killer gene" or monoamine oxidase A (MAOA).
The trigger word is “tangerine,” repeated three times in a row. Betty refuses to listen to Evelyn say the phrase in full, but agrees to let Charles try it out on her, as a test.
Curdle Jr., who tests them for the serial killer gene. To Betty's surprise, Juniper has the gene while Dagwood does not.
Several studies have found differences in the frequency distribution of variants of the MAOA promoter repeat between ethnic groups: 52-59% of African American men, 48-62% of Chinese men, 62% of Maori men, 57% of Japanese men, and 33-37% of European men carried the 3R allele, while 5.5% of Black men, 0.1% of Caucasian ...
Betty definitely has traits of BPD, such isolating herself, having an alternative persona —she uses when she's scared and angry—, obvious signs of anxiety, self-harm and feeling an immense pressure to be perfect.
Only about a third of people in Western populations have the low-activity form of MAOA. By comparison, low-activity MAOA has been reported to be much more frequent (approaching two-thirds of people) in some populations that had a history of warfare. This led to a controversy over MAOA being dubbed the “warrior gene.”
Cadherin-13 (CDH13), a unique glycosylphosphatidylinositol-anchored member of the cadherin family of cell adhesion molecules, has been identified as a risk gene for attention-deficit/hyperactivity disorder (ADHD) and various comorbid neurodevelopmental and psychiatric conditions, including depression, substance abuse, ...
What is the killer gene called?
MAOA and CHD13 are sometimes called “serial killer genes.” If we proceed to label people as “serial killer gene” carriers we risk stigmatization at unprecedented levels.
This is a next generation sequencing (NGS) test appropriate for individuals with clinical signs and symptoms, suspicion of, or family history of Monoamine Oxidase A Deficiency. Sequence variants and/or copy number variants (deletions/duplications) within the MAOA gene will be detected with >99% sensitivity.

Betty is pregnant with Archie's child, and in 25 years, he'll be crowned the Maple King, just like his dad.
But, Alice Cooper (Madchen Amick) revealed to her daughter, Betty (Lili Reinhart) in Season 3 that she carried the serial killer gene, which means Betty is likely to become a killer.
Hal was then told to convince Joseph Conway, the only survivor, to name someone else as the murderer of his family. He eventually married his high school sweetheart, Alice and later had two daughters: Betty and Polly.
Tangerine, Tangerine, Tangerine
The calls are coming from Shankshaw, which leads Betty to Evelyn Evernever. Evelyn exposits that the trigger word is “tangerine” (said three times in a row) and it causes the subject to become Betty…and thus want to kill actual Betty, who they see as Dark Betty.
Betty is the younger maternal half-sister of Charles. Their relationship is progressing. They spent a lot of time working together over the summer while investigating The Farm with their mother Alice working undercover.
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… and then came The Farm, an organ-stealing cult that used drugs to dupe members into seeing their departed love ones. For Cheryl, that meant them digging up Jason's body, mouth sewn shut in classic horror movie fashion, and making her believe that his surprisingly well-preserved corpse was her brother, back and alive.
It was revealed at the end of Season 1 that Betty is of Blossom blood, which is why the romantic relationship between her sister Polly and Jason Blossom was frowned upon. If Archie is, in fact, half Blossom, then it means he's kissed at least two people he's technically related to — Betty and Cheryl.
Is Betty Cooper a serial killer in Riverdale?
Riverdale plot-writers included a “serial killer gene” that's responsible for Betty Cooper occasionally murdering people. This isn't entirely fiction. Lawyers have used this argument in the past to get their clients reduced sentences.
These concerns need to be considered in light of the prevalence of one of the main MAOA warrior gene variants — the 3R variant. It is found in approximately 56 percent of Maori males, 58 percent of African American males, 34 percent of European males, 61 percent of Taiwanese males and 56 percent of Chinese males.
The MAO-A Gene
For reference, women have two X chromosomes, while men have one X and one Y chromosome. The X and Y chromosomes determine a person's sex at birth, which is why they're also known as “sex chromosomes” [6]. This also means that men can only have one MAOA variant, while women have two [6].
Mutations in the MAOA gene cause monoamine oxidase A deficiency. This condition affects males almost exclusively and is characterized by mild intellectual disability and behavioral problems, including aggressive and violent outbursts. In some cases, particular foods seem to worsen symptoms of the condition.
"When Betty digs her nails into her hands, it's kind of when things are happening with her family. That's her trigger, whether it be her mother, her brother, or Polly. I think that's something to keep in mind," she said about Betty's self-inflicted pinching, a form of self-harm.
Last season on Riverdale, it was revealed that Betty, the whip-smart, do-gooder in the group, had been taking Adderall to help her with her school work.
The character of Effy, in particular, exhibits mental health symptoms people with BPD have identified with. Effy is scared to trust people and love them and often engages in self-destructive behaviors.
Protein-rich foods such as meat, poultry, fish, eggs, dairy products, and beans are typical dietary sources of these amino acids [224]. These compounds stimulate the production of monoamines such as serotonin and dopamine, which may be an issue for people with less active MAOA versions [225, 226].
For one thing, in real life, everyone actually has the MAOA and CDH13 genes. The phrasing Riverdale should have used instead is that Betty has a specific mutation of these genes that may affect her mood.
- Recessive lethals. These are commonly found, as most lethal are recessive. ...
- Dominant lethals. These are the alleles whose presence is required in one copy in an entity for them to turn fatal. ...
- Conditional lethals. ...
- Balanced lethals. ...
- Gametic lethals.
Is MAOA a mental illness?
Collectively, we confirmed that MAOA is a risk gene for psychiatric disorders, and our results provide useful information toward a better understanding of genetic mechanism involving MAOA underlying risk of complex psychiatric disorders.
Code of a Killer is a three-part British police drama television series which tells the true story of Alec Jeffreys' discovery of DNA fingerprinting and its introductory use by Detective David Baker in catching the double murderer Colin Pitchfork.
Familial DNA testing has traditionally been used for a multitude of reasons, such as to identify potential genetic predispositions and to structure family trees. However, with advancements in technology, law enforcement agencies are now utilizing familial DNA testing to identify serial killers.
According to Kid, Killer hated his own laugh so much that he beat up anyone who made fun of it. He eventually stopped laughing at all and started to wear a mask to hide his face.
In addition, MAOA polymorphisms were reported to be associated with the hyperactive/impulsive type of ADHD and the development of borderline personality disorder (Liu et al., 2011).
The analysis of almost 900 Finnish criminals found that at least 5-10% of them -who had committed at least 10 homicides or repeatedly attempted homicides, or batteries- in fact carried a MAOA low-activity genotype.
First things first: are the MAOA and CDH13 genes even real? Actually yes! According to the Genetics Home Reference, MAOA is an enzyme that breaks down molecules called monoamines. Included in those monoamines are chemicals that act as neurotransmitters, like serotonin, epinephrine, norepinephrine, and dopamine.
In the case of Ted Bundy, the subject's genetics and environmental experiences were possible factors to his criminal mind. Based on the research, Bundy has portrayed characteristics of low MAOA gene activity. He grew up in a well-mannered and sustainable family.
Betty Cooper is an FBI agent and shop class teacher at Rivervale High School. Desperate to have a child of her own, Betty conspired with Cheryl and the town of Rivervale to sacrifice Archie to the Maple Maiden. And while she managed to conceive, her child was later taken from her womb by La Llorona.
After taking down the Farm and becoming acquainted with his family, specifically Betty and Jughead, who would go on to help Charles solve several investigations, they would discover that not only does Charles have the serial killer gene but that he is in fact a serial killer after he kills Bret Weston Wallis and Joan ...
Is Betty going to become a serial killer?
It doesn't work as she hopes, but all is not lost. Later, Betty spots TBK in the Cooper home, and once and for all she takes him down. TBK is now dead, and Betty seems to have finally accepted that regardless of any serial killer genes, she herself is not a serial killer.
The Genetics
A simple DNA test can be done to find out which single form of MAOA a male has inherited and which two forms a female has inherited. The MAOA gene is located on the X-chromosome. Men inherit only one X chromosome, so they have only one version of MAOA.