Question 14 STRs are "short tandem repeats"? coding regions with variable numbers of repeats that can vary by individual coding regions that determine key traits of an individual non-coding regions with repeated sequences the number of which can vary by individual regulatory regions with variable numbers of repeats that can vary by individual 2 pts
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Step 1: STRs, or short tandem repeats, are sequences of DNA where a short sequence of nucleotides is repeated multiple times in a row. Show more…
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Short tandem repeats (STRs) in DNA are often used in forensic analysis and for determining paternity. What characteristic of STRs makes them useful for these practices? Every racial and ethnic group has inherited different short sequence variations in DNA that are repeated in tandem. These sequences are acted upon differently by natural selection in different environments. The sequence of DNA that is repeated varies significantly from individual to individual. The number of repeats is highly variable from person to person or animal to animal.
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The following data are nucleotide sequences from 6 individuals. The bold letters indicate variable sites. (a) How many unique haplotypes are found in this sample? (b) Compute the differences between all possible pairs of sequences, and produce a distribution of pairwise sequence differences. (c) compute a Tajima D statistic. (d) What do the results suggest? Individual Sequence ATGTACGTAGCTGCGG ACGTACGTAGCTGCGG ACGTACGTAGCTGCGG ACGTGCGTAACCACAG ACGTGCGTAACCGCAG ACGTGCGTAACCGCAT
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