Question

1. below are dna strands. make the complementary dna strand:

original strand: atgcaaattgctcacccggggatcagcacccgg
complementary strand:
original strand: aggggatcagcacccggattttcatgagcccta
complementary strand:
original strand: aagtacgatcgatgcacatgcatggctacgc
complementary strand:

Explanation:

Step1: Recall base - pairing rules

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

Step2: Complement each base in the original strand

For the first original strand "ATGCAAATTGCTCACCCGGGGGATCAGCACCCGG":

• A pairs with T, T pairs with A, G pairs with C, C pairs with G.

The complementary strand is "TACGTTTAACGAGTGGCCCCCTAGTCGTGGCCG".
For the second original strand "AGGGGATCAGCACCCGGATTTTCATGAGCCCCTA":
The complementary strand is "TCCCCCTAGTCGTGGGCCAAAATGTCTCGGGGA T".
For the third original strand "AAGTACGATCGATGCACATGCATGGCTACGGC":
The complementary strand is "TTCA TGC TAGCTACGTGTACGTACCGATGCCG".

Answer:

Complementary Strand 1: TACGTTTAACGAGTGGCCCCCTAGTCGTGGCCG
Complementary Strand 2: TCCCCCTAGTCGTGGGCCAAAATGTCTCGGGGA T
Complementary Strand 3: TTCA TGC TAGCTACGTGTACGTACCGATGCCG