Zadanie 6
Each panel proposes the strand composition of two DNA molecules after one round of replication. Which panel represents semiconservative replication? A. Panels Q and R B. Panel Q only C. Panel R only D. Panel P only
- Materiał graficzny
Template-based semiconservative replication
Explain how each original strand directs a complementary new strand, preserving genetic information in daughter molecules.
Tę umiejętność sprawdzają 3 zadania wzorowane na arkuszach IB z lat 2022–2025.
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Zadanie 4b
In a model experiment, bacteria initially use nitrogen-15, a heavier stable isotope, to make their DNA. They are transferred to a medium supplying only nitrogen-14, the lighter isotope. DNA extracted before transfer and after one and two cell divisions is…
- Materiał graficzny
Zadanie 11
DNA strands in a bacterial population initially contain only heavy nitrogen. The bacteria then replicate twice using only light nitrogen. In the density-gradient diagrams, all-light DNA forms the upper band, hybrid DNA the middle band and all-heavy DNA the…
- Materiał graficzny