What are the two possible resolutions of a Holliday junction?
What will be an ideal response?
Ans: The Holliday junction results from a single strand exchange between two homologous duplexes. To resolve this structure, two homologous strands must be nicked and exchanged. If the two strands that were originally exchanged are re-exchanged, the result is the two parental duplexes and a possible patch recombinant, with a short length of heteroduplex DNA due to branch migration. If the two remaining strands are exchanged, two recombinant duplexes result.
You might also like to view...
The functional unit of genetic information is the
A) nucleotide. B) gene. C) chromosome. D) protein.
Which part of the neuron is responsible for receiving information?
A. axon B. dendrite C. soma D. nucleus E. axon hillock
In an asynchronous population, most of the cells are in S phase because it is the longest phase of the cell cycle.
a. true b. false
Which of the following characteristics does NOT distinguish the archaea from the bacteria?
A) the types of transfer RNA used B) the rRNA sequences present C) the deoxyribonucleotides D) cell wall composition E) cell membrane composition