DNA silent point mutation, animation

Référence de la vidéo 12082183
DNA silent point mutation. Animation showing a silent point mutation in the replication of DNA (deoxyribonucleic acid). As the DNA unravels, a helicase enzyme (red) is shown moving along the helix, separating the complementary strands. Labels appear showing the genetic code, the sequence of the nucleotide bases along a strand (cytosine, C, blue; guanine, G, yellow; adenine, A, green; thymine, T, red). A DNA polymerase enzyme is shown replicating a new strand and making a mistake (red area). The new complementary strands are formed, completing the replication process and the animation zooms in on the mistake (a mutation). Adjacent groups of three bases, known as codons, code for the production of amino acids (the basis of proteins). The codon affected here is GTT (for the amino acid valine). This has mutated to GTC, which will still produce the amino acid valine. This is known as a silent mutation (one producing no change), as opposed to mutations that produce nonsense or change (missense).
Licence : Droits gérés
Crédit : Science Photo Library / EQUINOX GRAPHICS / RHYS LEWIS, AHS, DECD, UNISA
Model Release : Non requis
Durée : 40 Secondes
Aspect ratio : 16/9
Restrictions : -

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