Distinguish base substitutions, insertions and deletions by comparing original and mutated DNA sequences.
Tę umiejętność sprawdza 7 zadań wzorowanych na arkuszach IB z lat 2022–2026.
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…
Genetic information helps explain early life and guide present-day conservation. (a) Describe RNA structure and evidence supporting an RNA-first stage of early life. (b) Describe uses of DNA-sequence analysis in biodiversity conservation. (c) Explain causes…
A copied DNA segment changes from GATCCGTAAGC to GATCTGTAAGC. Which mutation class describes this change? A. Deletion B. Insertion C. Whole-genome duplication D. Base substitution
A genetic investigation must identify a change affecting exactly one nucleotide in a gene. Identify the most precise suitable method.
(a) Outline how new heritable traits can arise and become more common in a population over time. (b) Explain how polyploidy can cause the abrupt origin of a new plant species. (c) Suggest advantages of scientific species names.
(a) Outline how new heritable traits can arise and become more common in a population over time. (b) Explain how polyploidy can cause the abrupt origin of a new plant species. (c) Suggest advantages of scientific species names.
Nucleic acids underlie inherited biological variation. (a) Draw and label one RNA nucleotide. (b) Describe how DNA profiling can be used to investigate paternity. (c) Explain why human adult heights vary.
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