These differences are illustrated in the diagram below ... strand interacts with the opposite end of the second strand. In switchback DNA, the base pairing pattern is different.

In eukaryotes, DNA is tightly wound into a complex called chromatin. Thanks to the process of chromatin remodeling, this complex can be "opened" so that specific genes are expressed. Various ...

DNA polymerases catalyse chain growth only in the 5' to 3' chemical direction, but both new daughter strands grow at the fork, so a dilemma of the 1960s was how the bottom strand in this diagram ...

This diagram depicts the chemical structure of pyrimidine ... It interferes with DNA synthesis by incorporating into the growing DNA strand, leading to the termination of DNA replication and cell ...

We've now zoomed in enough to see portions of the DNA strand. The DNA is wrapped around histones -- protein structures that are sometimes depicted as discs. Histones carry a slight positive charge ...

DNA molecules are large and complex. They carry the genetic code that determines the characteristics of a living organism. The diagram shows the relationship between the cell, its nucleus ...

But James Watson and Francis Crick's claim was a valid one, for they had in fact discovered the structure of DNA, the chemical that encodes instructions for building and replicating almost all ...

RNA polymerase moves along the DNA strand. Free RNA nucleotides form hydrogen bonds with the exposed DNA strand nucleotides by complementary base pairing to form a strand of mRNA: Note - RNA ...

For DNA to replicate, the helix must first unwind and break the DNA from a double strand into two single strands. Credit: Taha Shahid et al Upon binding, helicases melt the DNA, breaking the ...