Question

In Python: Write a program that produces the following output when searching for the word RNA in the paragraph below:

Output:

(RNAi) ends at position 49

(dsRNA) ends at position 211

(ssRNAs) ends at position 374

mRNAs. ends at position 431

Search Text (you can assign this to a string in your program):

"Several rapidly developing RNA interference (RNAi)

methodologies hold the promise to selectively inhibit gene expression in

mammals. RNAi is an innate cellular process activated when a

double-stranded RNA (dsRNA) molecule of greater than 19 duplex

nucleotides enters the cell, causing the degradation of not only the

invading dsRNA molecule, but also single-stranded (ssRNAs) RNAs of

identical sequences, including endogenous mRNAs."

Answer 1

The code will be

s="Several rapidly developing RNA interference (RNAi) \
methodologies hold the promise to selectively inhibit gene expression in\
mammals. RNAi is an innate cellular process activated when a \
double-stranded RNA (dsRNA) molecule of greater than 19 duplex \
nucleotides enters the cell, causing the degradation of not only the \
invading dsRNA molecule, but also single-stranded (ssRNAs) RNAs of \
identical sequences, including endogenous mRNAs."

a="(RNAi)";b="(dsRNA)";c="(ssRNAs)";d="mRNAs.";

if s.find(a)!=-1:
print(f'{a} ends at position',s.find(a)+len(a))
else:
print(f'{a} not found')
if s.find(b)!=-1:
print(f'{b} ends at position',s.find(b)+len(b))
else:
print(f'{b} not found')
if s.find(c)!=-1:
print(f'{c} ends at position',s.find(c)+len(c))
else:
print(f'{c} not found')
if s.find(d)!=-1:
print(f'{d} ends at position',s.find(d)+len(d))
else:
print(f'{d} not found')

The output is