Because of the nature of complementary base pairing, if you know the sequence of one strand of DNA, you can predict the sequence of the strand that will pair with, or "complement" it.
Remember, when writing complementary DNA sequences, you need to write the sequence in the 5' to 3' direction. This usually involves reversing the sequence after writing it complementary to the one you are given.
1. 5'-TGC-3'
2. 5'-ATCCG-3'
3. GATTACA
3'-TGC-5'5'-GCCAT-3'3'-ACG-5'5'-GCCTA-3'3'-GCA-5'5'-TAGGC-3'3'-CGT-5'5'-CGGAT-3'Correct! You have paired A with T and G with C and given the correct 5' to 3' orientation.
Remember, A pairs with T and G pairs with C.
Remember to give the correct 5' to 3' orientation.
Which sequences is complementary to a DNA strand with sequence 5 3?
This means adenine pairs with thymine and cytosine pairs with guanine in the opposite strand. The given strand has a sequence 5'-GAATTG-3'. Hence the complementary strand will have a sequence 5'-CAATTC-3'.
What is 5 and 3 in DNA sequence?
Each end of DNA molecule has a number. One end is referred to as 5' (five prime) and the other end is referred to as 3' (three prime). The 5' and 3' designations refer to the number of carbon atom in a deoxyribose sugar molecule to which a phosphate group bonds.
What is complementary DNA sequence for the Strand 5 ATTGCA3 '?
If one strand of a DNA molecule has the sequence of bases 5'ATTGCA3', the other complementary, antiparallel strand of DNA would have the sequence: 5'TGCAAT3'.