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If you took dna samples from two strangers on a street,how similar would their dna be?

User Faire
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2 Answers

3 votes

Answer:

99.9% the same

User Roest
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3 votes

The correct answer is: about 99%.

The main difference between two random people’s genetic make-up issingle base pair differences, or polymorphisms (SNPs). There are about one SNP per 1000 bases. Since the human genome is about 3 Gbp long, about 3 million SNPs among two random people is present. SNPs may occur within coding sequences of genes, non-coding regions of genes, or in the intergenic regions.


User Debjit Bhowmick
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