Question
Biology Question on cell cycle and cell division
The appearance of recombination nodules on homologous chromosomes during meiosis characterizes:
A
Synaptonemal complex
B
Bivalent
C
Sites at which crossing over occurs
D
Terminalization
Answer
Sites at which crossing over occurs
Explanation
Solution
During the pachytene stage of prophase I, homologous chromosomes undergo crossing-over and exchange of genetic material occurs between their non-sister chromatids. This crossing-over occurs at specific sites known as recombination nodules.