12. Explain the IndexError you observed. What is the range of indexes for the dna string? 13. Consider the notation of the operator (m:n] for slicing the string. a. Is the value at the same as the corresponding index value (i.e., dna[m])? If not, describe what it means. returns the part of the string b. Is the value at n the same as the corresponding index value (i.e., dna[n])? If not, describe what it means c. Explain what it means when only a single number is referenced when creating a slice, such as [m] or [:n). 6 14. What is the simplest way to get the first three chaacters of dna using slicing? What is the simplest way to get the last three characters? 15. Write a Python expression that slices 'GACT' from dna using positive indices. Then write another expression that slices the same string using negative indexes. 16. Write a Python assignment statement that uses the len function to assign the last letter of dna to the variable last. Print(len(s)) 17. Write a Python assignment statement that uses a negative index to assign the last letter of dna to the variable last. Predictions on Footer ' + 100 MacBook Pro