Outline targeted genome modification, evaluate an application and discuss ethical or regulatory implications.
Tę umiejętność sprawdza 5 zadań wzorowanych na arkuszach IB z lat 2024–2026.
Researchers use CRISPR–Cas9 to correct a defective DNA sequence in cultured cells. Which description best identifies the basis of this approach? A. Selective destruction of all messenger RNA in the cell B. Replacement of the entire nucleus with a bacterial…
A guide RNA positions Cas9 at a chosen genomic sequence. What is the direct catalytic action of Cas9? A. Joining amino acids at a ribosome B. Methylating every cytosine in the genome C. Cleaving the targeted DNA strands D. Copying the guide RNA into a whole…
Explain how CRISPR–Cas9-based editing could change production of the defective protein M.
DNA structure and sequence affect biological function. (a) Outline how ultraviolet radiation can act as a mutagen. (b) Explain links between DNA molecular structure and its functions. (c) Describe how gene knockout is used in research. One additional mark is…
Plant genomes can be modified to produce useful traits. Using one named example, outline an advantage of genetic modification in plants.
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