Question

1. application: using what you have learned about dna, code the opposite strand using the section of dna below. remember base pairing rules* (the first one is done for you)

atg\tcca\tggc\tggc\ttag
tac

Explanation:

Step1: Recall base - pairing rules

In DNA, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).

Step2: Code for CCA

For the sequence CCA:

• C pairs with G, C pairs with G, A pairs with T. So the opposite strand is GGT.

Step3: Code for GGC

For the sequence GGC:

• G pairs with C, G pairs with C, C pairs with G. So the opposite strand is CCG.

Step4: Code for GGC

For the sequence GGC (again):

• G pairs with C, G pairs with C, C pairs with G. So the opposite strand is CCG.

Step5: Code for TAG

For the sequence TAG:

• T pairs with A, A pairs with T, G pairs with C. So the opposite strand is ATC.

Answer:

TAC, GGT, CCG, CCG, ATC