Do looks come from a mother or a father?
Looks come from both parents, as children inherit roughly 50% of their DNA from their mother and 50% from their father.
How Genetic Inheritance Works
Equal DNA Share:
You receive 23 chromosomes from your mother and 23 chromosomes from your father.
Polygenic Traits:
Physical features like facial structure, skin tone, eye color, and height are polygenic, meaning they are shaped by multiple genes working together.
Gene Expression:
Not all inherited genes are active at the same time. Some genes are dominant, while others are recessive or influenced by which parent they came from.
Myths and Science About Resemblance
The Father Resemblance Myth:
While some older or smaller studies (like a 1995 paper) suggested babies tend to look more like their fathers to confirm paternity, larger and more recent studies show that infants resemble both parents equally.
Specific Genetic Contributions:
While general nuclear DNA is split 50/50, you inherit mitochondrial DNA solely from your mother, and males inherit a Y chromosome exclusively from their father.
Skipping Generations:
Because traits are randomly shuffled during conception, a child can end up looking like an aunt, uncle, or grandparent instead of a direct copy of either parent.
How Genetic Inheritance Works
Equal DNA Share:
You receive 23 chromosomes from your mother and 23 chromosomes from your father.
Polygenic Traits:
Physical features like facial structure, skin tone, eye color, and height are polygenic, meaning they are shaped by multiple genes working together.
Gene Expression:
Not all inherited genes are active at the same time. Some genes are dominant, while others are recessive or influenced by which parent they came from.
Myths and Science About Resemblance
The Father Resemblance Myth:
While some older or smaller studies (like a 1995 paper) suggested babies tend to look more like their fathers to confirm paternity, larger and more recent studies show that infants resemble both parents equally.
Specific Genetic Contributions:
While general nuclear DNA is split 50/50, you inherit mitochondrial DNA solely from your mother, and males inherit a Y chromosome exclusively from their father.
Skipping Generations:
Because traits are randomly shuffled during conception, a child can end up looking like an aunt, uncle, or grandparent instead of a direct copy of either parent.
31-35, F
