QuestionAugust 3, 2025

In general, what are the odds that two people have matching STRs in all 13 CODIS core loci? Select one: a. One in 7 billion which is the population of our planet b. One in five thousand c. One in 500 million d. One in 500 trillion

In general, what are the odds that two people have matching STRs in all 13 CODIS core loci? Select one: a. One in 7 billion which is the population of our planet b. One in five thousand c. One in 500 million d. One in 500 trillion
In general, what are the odds that two people have matching STRs in all 13 CODIS core loci?
Select one:
a. One in 7 billion which is the population of our planet
b. One in five thousand
c. One in 500 million
d. One in 500 trillion

Solution
4.4(146 votes)

Answer

d. One in 500 trillion Explanation 1. Understand STR Matching Probability STRs (Short Tandem Repeats) are sequences in DNA used for identification. The probability of two people having matching STRs across all 13 CODIS core loci is extremely low due to the high variability and uniqueness of these sequences. 2. Determine Correct Odds The odds of two individuals having identical STR profiles at all 13 CODIS loci are approximately one in 500 trillion, reflecting the vast genetic diversity among humans.

Explanation

1. Understand STR Matching Probability<br /> STRs (Short Tandem Repeats) are sequences in DNA used for identification. The probability of two people having matching STRs across all 13 CODIS core loci is extremely low due to the high variability and uniqueness of these sequences.<br /><br />2. Determine Correct Odds<br /> The odds of two individuals having identical STR profiles at all 13 CODIS loci are approximately one in 500 trillion, reflecting the vast genetic diversity among humans.
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