According to the Holliday model, the initial steps in recombination are which of the following?
A) Double strand breakage and rejoining of nonhomologous chromosomes
B) Double_strand breakage and rejoining of homologous chromosomes
C) Single-strand breakage and strand transfer between non-homologous chromosomes
D) Single_strand breakage and strand transfer between homologous chromosomes

Question

Quizplus · Accepted Answer

According to the Holliday model, the initial steps in recombination involve single-strand breakage and strand transfer between homologous chromosomes. This results in the formation of a Holliday junction, which can then undergo cleavage and ligation to complete the recombination process. Choice A is incorrect as it involves rejoining of nonhomologous chromosomes, which is not a part of the Holliday model of recombination. Choice B is incorrect as double-strand breakage and rejoining is not the initial step in recombination according to the Holliday model. Choice C is incorrect as it involves strand transfer between non-homologous chromosomes, which is not a part of the Holliday model of recombination.

According to the Holliday Model, the Initial Steps in Recombination