DNA replication at bubble stage,TEM

Numéro d’image : 11587281
DNA replication at bubble stage,TEM
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
Licence : Droits gérés
Crédit: Science Photo Library / Murti, Dr. Gopal
Taille de l’image : 4724 px × 3742 px
Model Release : Non requis
Property Release : Non requis
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