DNA replication. Transmission electron micrograph (TEM) of human DNA (deoxyribonucleic acid, dark strands) from a HeLa cancer cell, showing a stage of
DNA replication. Transmission electron micrograph (TEM) of human DNA (deoxyribonucleic acid, dark strands) from a HeLa cancer cell, showing a stage of DNA replication. At centre is a replication 'bubble', where the DNA has unwound into two single strands. Normally, DNA consists of two tightly wound spiral strands. During the process of replication, a 'bubble' region forms which enlarges to form a Y-shaped molecule termed a replication fork. It is here that daughter strands form as the parent DNA acts as a template for the construction of a new matching strand. In this way the sequence of bases (or genetic information) along the DNA molecule is replicated.
Size: 4724px × 3742px
Photo credit: © DR GOPAL MURTI/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: acid, biochemical, biochemistry, biological, biology, black--white, bubble, cell, deoxyribonucleic, division, dna, electron, genetic, genetics, hela, information, material, micrograph, microscope, molecular, molecule, monochrome, nuclear, parent, replicating, replication, semiconservative, separated, separating, strand, strands, tem, template, transmission, uncondensed, unwound
