DNA silent point mutation, animation

Videonummer 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).
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / EQUINOX GRAPHICS / RHYS LEWIS, AHS, DECD, UNISA
Modell-Rechte: nicht erforderlich
Länge: 40 Sekunden
Seitenverhältnis: 16:9
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