Analysis of STRs shows that
A) the more alleles that are analyzed, the more frequent the combinations become in a population.
B) the more alleles that are analyzed, the rarer the combinations become in a population.
C) all STR alleles occur at equal frequency..
D) the usefulness of STRs for DNA profiling is very limited.
E) None of these are correct.

Question

Quizplus · Accepted Answer

As more alleles are analyzed, the number of possible combinations increases, making any one particular combination more rare in the population. This rarity is what makes STRs useful for DNA profiling. Choice A is incorrect because as more alleles are analyzed, the combinations become rarer, not more frequent. Choice C is incorrect because some STR alleles occur at higher frequencies than others. Choice D is incorrect because STRs have been widely used in DNA profiling with great success.

Analysis of STRs Shows That