Python lec 1004_ch02_excercies

Python lec 1004_ch02_excercies

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  + Dr. Ramadan Babers Facultyof Science - Helwan University Spring – 2019 Python LEC - 03 for Biologists https://www.linkedin.com/in/ramadan-babers-phd-78976345
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  + Printing and Manipulating Text (Exercise) 2 Chapter: 2
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  3 1- Calculating ATcontent Here's a short DNA sequence: ACTGATCGATTACGTATAGTATTTGCTATCATACATATATATCGATGCGTTCAT Write a program that will print out the AT content of this DNA sequence. Hint: you can use normal mathematical symbols like add (+), subtract (-), multiply (*), divide (/) and parentheses to carry out calculations on numbers in Python.
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  4 1- Calculating ATcontent
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  5 1- Calculating ATcontent (Quiz) Here's a short DNA sequence: ACTGATCGATTACGTATAGTATTTGCTATCATACATATATATCGATGCGTTCAT  Write a program that will print out the AT content of this DNA sequence.  Hint: you can use normal mathematical symbols like add (+), subtract (-), multiply (*), divide (/) and parentheses to carry out calculations on numbers in Python.  The result will be as shown below
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  6 2- Complementing DNA Here'sa short DNA sequence: ACTGATCGATTACGTATAGTATTTGCTATCATACATATATATCGATGCGTTCAT Write a program that will print the complement of this sequence. i.e., replace: A with T, T with A, C with G, and G with C.
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  7 2- Complementing DNA
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  8 3- Restriction fragmentlengths Here's a short DNA sequence: ACTGATCGATTACGTATAGTAGAATTCTATCATACATATATATCGATGCGTTCAT The sequence contains a recognition site for the EcoRI restriction enzyme, which cuts at the motif G*AATTC (the position of the cut is indicated by an asterisk). Write a program which will calculate the size of the two fragments that will be produced when the DNA sequence is digested with EcoRI.
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  9 3- Restriction fragmentlengths
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  10 3- Restriction fragmentlengths (Quiz) Here's a short DNA sequence: ACTGATCGATTACGTATAGTAGAATTCTATCATACATATATATCGATGCGTTCAT The sequence contains a recognition site for the EcoRI restriction enzyme, which cuts at the motif G*AATTC (the position of the cut is indicated by an asterisk). Write a program which will calculate the size of the two fragments that will be produced when the DNA sequence is digested with EcoRI. Print the DNA Print the DNA Length Print Fragment1 Print Fragment2 Print Fragment1 Length Print Fragment2 Length