This is a transversion mutation

The planes of the bases are perpendicular to the DNA helix axis

During splicing in precursor mRNA in mammalian cells, the first RNA cleavage step involves:

They have phosphate groups in the rings

Down Syndrome in humans is caused by

This mutation could be caused by tautomeric shifting of the bases

Which enzyme is not required for prokaryotic DNA replication?

CTTC

Which of the following could be a recognition site for a restriction endonuclease?

GATATC