r/BeAmazed • u/Acceptable-Elk3412 • 7d ago

Nature Cute

I don't know what I was expecting after she said, but they're also something else.

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u/folarin1 7d ago

How did it happen? She proceeded to not tell us how.

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u/just_a_person_maybe 7d ago

This happens all the time. Mom has both white and black genes, dad has white genes. Their kids can come out the same color as either parent, something in between, or potentially even darker. The whiter twin got a higher percentage of the mom's white genes and the blacker twin got a higher percentage of the mom's black genes.

When people have babies they don't pass down the exact set of genes every time, which is how siblings look different. Genes can be passively passed down through generations without being expressed, only to pop up much later as a surprise. For example, Sandra Liang, who was born with darker skin and curly hair after three generations of white ancestors, which caused confusion and legal trouble because apartheid.