Ques. Crossing over takes place between which chromatids and in which stage of the cell cycle ?
A. Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I.
B. Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I.
C. Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I.
D. Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I.
Answer:B
Ques. Crossing over takes place between which chromatids and in which stage of the cell cycle ?
A. Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I. B. Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I. C. Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I. D. Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I.