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Paraphin [41]
3 years ago
6

Humans only have a few eye colors and only four ABO-based blood types. How can DNA tests definitively identify individuals when

many people have brown eyes or type A blood?
Biology
1 answer:
ehidna [41]3 years ago
5 0
The correct answer is that variable number repeats are used in DNA tests; they have hundreds of possible lengths. Eye color is determined by variations in a person's genes. Most of the genes associated with eye color are involved in the production, transport, or storage of a pigment called, melanin. Eye color is directly related to the amount and quality of melanin in the front layers of the iris. 
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