Zadanie 2b
List two mechanisms by which a coronavirus genome could acquire a mutation.
Mutation and gene editing
Umiejętności w tym dziale
Umiejętności z tego działu sprawdza 25 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 23 z 54 arkuszy w bazie.
Zadania z tego działu: 25 Otwórz w wyszukiwarce z filtrami
Zadanie 6a
State the process that originally creates a new allele.
Zadanie 10
A candidate gene may be required for yeast cells to use a particular sugar. Which technique would most directly test its function? A. Measure the total mass of extracted DNA B. Increase the number of copies of a nearby non-coding fragment by PCR C. Determine…
Zadanie 11
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…
Zadanie 11
The same DNA region is sequenced before and after replication. Original: ACGTCCATGATC Replicated: ACGTTCATGATC Which change is present? A. One base has been replaced while sequence length stays constant B. One extra triplet has been inserted C. One nucleotide…
Zadanie 11
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…
Zadanie 7b
Distinguish an insertion mutation from a deletion mutation.
Zadanie 7c
Explain how CRISPR–Cas9-based editing could change production of the defective protein M.
Zadanie 9
A multicellular organism uses inherited DNA information during development and reproduction. (a) Describe causes of base substitutions and their possible consequences. (b) Distinguish between mitotic and meiotic cell division in eukaryotes. (c) Explain how…
Zadanie 10
A DNA template is read 3′ to 5′. The reading frame starts at the first base shown. The first G in the fourth triplet is removed. 3′–TAC GGA AAT GCT CCG TTA–5′ What is the fourth mRNA codon after this deletion? A. AGC B. GAG C. CTC D. GGA