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RankedFacts.com > Blog > Science > Biology > Human Identity: 10 Cases That Defy DNA
BiologyScience

Human Identity: 10 Cases That Defy DNA

RankedFacts Team
Last updated: February 26, 2025 11:51 am
RankedFacts Team
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Human Identity: 10 Cases That Defy DNA
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Human identity is often thought to be deeply rooted in our DNA, the unique code that defines who we are. But, what happens when extraordinary cases challenge this very notion? These intriguing stories force us to reconsider the essence of identity, showing how it’s influenced by biology, environment, and personal experiences.

Contents
10. Karen Keegan: The Woman with Two Genomes9. David Reimer: The Boy Raised as a Girl8. Kim Noble: The Artist with Multiple Personalities7. The Identical Strangers: Separated at Birth6. Lydia Fairchild: The Mother Who Failed a DNA Test5. Noah Wall: The Boy without a Brain4. Marina Chapman: The Feral Child Raised by Monkeys3. Brooke Greenberg: The Girl Who Didn’t Age2. Phineas Gage: The Man Who Survived a Brain Injury1. The “Oldest” Twins

Let’s delve into ten remarkable cases that defy what we think we know about human identity. Prepare to be captivated by these stories that reveal the surprising complexity of what it truly means to be human.

10. Karen Keegan: The Woman with Two Genomes

You could have a secret twin (but not the way you think) - Kayla Mandel Sheets

Karen Keegan’s life took an unexpected turn when she needed a kidney transplant at 52. Doctors discovered that two of her children weren’t a genetic match. Further investigation revealed that Karen possessed two different sets of DNA, making her a human chimera.

Human chimerism occurs when two fertilized eggs merge early in development. In Karen’s case, some cells carried one genetic identity, while others had another. This rare condition challenges the belief that DNA is the sole determinant of biological identity.

This discovery raised questions about the reliability of genetic testing and our understanding of genetic makeup. Karen Keegan’s story highlights how much we still have to learn about human genetics and identity.[1]

9. David Reimer: The Boy Raised as a Girl

The Monster Behind Gender Theory, and the Atrocious Lie He Based It On

David Reimer’s story shows how identity is influenced by more than just genetics. Born male in 1965, a botched circumcision led psychologist Dr. John Money to suggest raising David as a girl, believing gender identity was shaped by socialization. David’s parents agreed to the gender reassignment and raised him as Brenda.

Brenda struggled, never feeling comfortable in her assigned gender. At 14, she learned about her true biological sex and chose to live as a male, adopting the name David. Years of confusion and trauma left deep scars.

David Reimer’s life highlights the interplay between biology and environment in shaping gender identity. His tragic story prompted a reevaluation of approaches to gender identity, emphasizing the importance of acknowledging biological aspects.[2]

8. Kim Noble: The Artist with Multiple Personalities

The Artist with Multiple Personalities

Kim Noble’s life is a testament to the complexity of human identity. Diagnosed with Dissociative Identity Disorder (DID), Kim has over 20 personalities, each with unique traits and artistic styles. This condition stems from severe childhood trauma, causing her to switch between identities.

Each personality has its own narrative, making her life a mosaic of experiences. Her artwork reflects this multiplicity, with each personality creating distinct pieces, offering a visual representation of her internal world.

Living with DID presents challenges, but Kim uses her experiences for creativity and advocacy. Through her art, she raises awareness about DID and challenges misconceptions. Kim Noble’s life sheds light on mental health and questions the idea of a coherent identity.[3]

7. The Identical Strangers: Separated at Birth

Separated at Birth: Twins and Triplets Reunite after Cruel Experiment | ENDEVR Documentary

Robert Shafran, Eddy Galland, and David Kellman, identical triplets, were separated at birth and adopted by different families. Their reunion occurred by chance when Robert and Eddy were mistaken for each other in college. David soon discovered he was their third sibling.

Despite different environments, they shared similarities. Their reunion became a media sensation, leading to the documentary Three Identical Strangers. Their separation was part of a secret scientific study on nature versus nurture.

The study, without the families’ knowledge, aimed to understand the impact of genetics and environment. The triplets’ lives diverged after their reunion, highlighting the impact of upbringing on identity. Their story raises ethical questions about scientific pursuits.[4]

6. Lydia Fairchild: The Mother Who Failed a DNA Test

Mom Of 3 Takes Dna Test, Then Results Tell Her The Kids Aren’t Hers At All

Lydia Fairchild’s life became a legal nightmare when DNA tests showed her children weren’t genetically related to her. Accused of fraud, Lydia was found to be a human chimera, possessing two sets of DNA.

Chimerism occurs when two embryos merge, resulting in an individual with two genetic profiles. In Lydia’s case, her reproductive organs carried one set of DNA, while the rest of her body carried another. This meant her blood samples didn’t match her children’s, even though they were her biological offspring.

Lydia’s case highlighted the limitations of DNA testing and genetic identity complexities. Her story stresses the need to consider genetic diversity in legal and medical contexts, challenging the infallibility of DNA tests.[5]

5. Noah Wall: The Boy without a Brain

Six-Year-Old Defies Odds After Born With Less Than 2% of His Brain | Good Morning Britain

Noah Wall was born with just 2% of his brain functioning due to spina bifida and hydrocephalus. Doctors gave him little chance of survival, but Noah thrived in ways that astonished the medical community.

As Noah grew, his brain began to develop, baffling doctors. By age three, scans showed his brain had grown to 80% of a typical brain. This challenged medical understanding of brain plasticity and the potential for recovery after prenatal damage.

Noah’s journey underscores the adaptability of the human brain and raises questions about medical predictions. His case invites a reevaluation of brain regeneration and the factors influencing such recoveries. Noah Wall’s story is a reminder of the mysteries surrounding the human brain.[6]

4. Marina Chapman: The Feral Child Raised by Monkeys

I Lived With Monkeys In The Jungle | Minutes With | @ladbiblestories

Marina Chapman was kidnapped from her village in Colombia at age five and abandoned in the jungle. She spent five years living with capuchin monkeys, adapting to their ways. Her story questions human identity and the influence of environment.

Discovered by hunters and sold to a brothel, Marina eventually escaped and found refuge with a family. She moved to the UK, building a new life. Her experiences with monkeys provided her with unique survival skills.

Marina’s story has fascinated psychologists, providing insight into human behavior. Her ability to transition from a feral child to a functioning member of society highlights human adaptability. Marina Chapman’s life is a testament to the human spirit.[7]

3. Brooke Greenberg: The Girl Who Didn’t Age

20-year-old woman trapped in child's body

Brooke Greenberg suffered from Syndrome X, causing her to stop aging physically and mentally. Despite living for 20 years, she remained the size and developmental age of a toddler. Her condition baffled doctors, challenging our understanding of aging.

Brooke’s family provided love and care, navigating the complexities of her condition. Researchers sought to understand the biological mechanisms behind aging. Despite studies, her condition remained a mystery.

Brooke’s condition prompts questions about the factors controlling aging. Her life offered an opportunity to explore the processes governing growth and development. Brooke Greenberg’s existence reminds us of the unknowns in medical science.[8]

2. Phineas Gage: The Man Who Survived a Brain Injury

What Really Happened to Phineas Gage?

In 1848, Phineas Gage survived an accident where an iron rod went through his skull, damaging his brain. He remained conscious but his personality changed. His case provided insights into the workings of the human brain.

Before the accident, Gage was hardworking. Afterward, he became impulsive and irreverent. His case suggested a link between brain structure and personality, challenging notions of the time.

Gage’s survival and behavioral changes were documented by Dr. John Harlow. His case is a cornerstone in neuroscience, illustrating how brain injuries can affect cognitive functions. Phineas Gage’s experience underscores the relationship between brain anatomy and identity.[9]

1. The “Oldest” Twins

Hear from couple who delivered twins from 30-year-old frozen embryos

In 2017, twins Lydia and Timothy were born through IVF from embryos frozen for 30 years. Despite being born minutes apart, their biological ages differed due to the timing of their conception.

The embryos were created and frozen in 1992, remaining in cryopreservation until 2022. This delay didn’t affect their development. Their parents were astonished by the unique circumstances of their children’s births.

The twins’ story raises questions about embryo freezing and its effect on human development. It shows that biological age can be paused and resumed, challenging traditional ideas of age. The family’s experience highlights the impact of fertility treatments on human growth and identity.[10]

These ten cases challenge our understanding of human identity, revealing that it’s not solely determined by DNA but influenced by a multitude of factors. From chimerism to brain injuries, each story provides unique insights into what shapes our sense of self. These extraordinary examples underscore the complexity and mystery of human identity.

What are your thoughts on these cases? Leave your comment below!

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TAGGED:agingbrain injurychimerismdissociative identity disorderDNA surveillanceferal childrengeneticshuman identitymedical mysteriesnature vs nurture

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