If you have 20 repeats of the STR sequence, it means that your sibling would have 20 repeats too.

True

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False

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Solution

The correct option is B False
STRs stand for short tandem repeats. in simple words, they are few nucleotide long sequences which are unique, in their sequence and in their position too. Thus, the sequence and distribution of these STRs make each person unique. Though the pattern is inherited, the probability is extremely low (almost nil) for two individuals to have exactly the same number of these repeats.

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