The dark bands indicate areas where the structure of the chromosome is dense ... We've now zoomed in enough to see portions of the DNA strand. The DNA is wrapped around histones -- protein ...

This means that one strand's sugar-phosphate chain runs in ... Crick were pursuing a definitive model for the stable structure of DNA inside cell nuclei. Watson and Crick ultimately used ...

DNA is fundamental to the biology of all life on Earth, but how many of us actually know what it is or what it's made of?

DNA is a complex molecule that consists of two strands coiled around each other to form a double helix structure. Comparison of a single ... The double helix unwinds, and each strand serves as a ...

Beckwith and colleagues used a method to gently remove one strand of DNA in cells at various stages of cell division, keeping the chromosome structure intact. They could then use targeted sets of ...

In the double helix structure of DNA, thymine forms a base pair with adenine ... DNA polymerase enzymes use the existing DNA strand as a template and add the complementary nucleotides, including ...

RNA polymerase moves along the DNA strand. Free RNA nucleotides form hydrogen ... Peptide bonds form between the adjacent amino acids to finalise the structure.