Question

python Write a program that calculates the AT and GC content (i.e. the percentage of G and C, and the percentage of A and T) in a given sequence. You can make up your own dummy sequence and store it in text file (use something like Notepad, not word!). Your program should read in the sequence from the file and calculate the GC and AT content. Print out the results to a file called DNA_Statistics.txt, the result should look something like this: The GC content of the DNA sequence given is: 48.5% The AT content of the DNA sequence given is: 51.5%

Answer 1

DNA has 2 base pairs they are:

1)AT-Adenine-Thymine

2)GC-Guanine-Cytosine

Adenine percentage is equal to Thymine percentage

if AT is 30 percent.15 percent is Adenine and 15 percent is Thymine is found

likethat

if GC is 70 percent.35 percent Guanine and 35 percent is Cytosine is found.

so based on this logic code will be written.

#source code:

#source code in plain text:

menu py dummy bxt DNA Statics bxt newk py f-open ("dummy.txt","r") sequence_string-f.read () f.close ( AT_count-sequence_string.count ("AT") GC_count-sequence_string.count ("GC") Total-AT_count+GC_count GC-round (GC count/Total 100,2) AT-round (AT_count/Total*100, 2) fl-open ("DNA_Statics.txt", "w") Che GC content of the DNA sequence given is:"+str (GC) +""+"\ nThe AT content of the DNA sequence given is:"+str (AT)+" " ) 1.close 12 13 14

f=open("dummy.txt","r")
sequence_string=f.read()
f.close()
AT_count=sequence_string.count("AT")
GC_count=sequence_string.count("GC")
Total=AT_count+GC_count
GC=round(GC_count/Total*100,2)
AT=round(AT_count/Total*100,2)
f1=open("DNA_Statics.txt","w")
f1.write("The GC content of the DNA sequence given is:"+str(GC)+"%"+"\nThe AT content of the DNA sequence given is:"+str(AT)+"%")
f1.close()

#dummy.txt file

menu py dummy txt newk.py DNA Statics.bdx ATGCATATGCATGCATGCATATGCATATGCATGCATATGCATATGCATGCATGCATGCATGCATATGCATGCATGCATATGCATATGCATGCATATGO CATGCATATGCATGCATATATGCAT

#dummy.txt file in plain text

ATGCATATGCATGCATGCATATGCATATGCATGCATATGCATATGCATGCATGCATGCATGCATATGCATGCATGCATATGCATATGCATGCATATGCATGCATGCATATGCATGCATATATGCAT

#output:

DNA Statics txt menu.py dummy txt newk.pyX 1 The GC content of the DNA sequence given is:39.68% The AT content of the DNA sequence given is: 60.32% 2

#output DNA_Statics.txt:

The GC content of the DNA sequence given is:39.68%
The AT content of the DNA sequence given is:60.32%

#if you have any doubt comment below...