Q. The point at which crossing over occurs is called as :
Solution:
Chiasmata is the point of attachment between non-sister chromatids of two homologous chromosomes. Crossing over i.e., exchange of segments between nonsister chromatids of a bivalents occurs at chiasmata during pachytene stage of prophase-I.
Two chromatids of a chromosome is jointed at a point known as centromere.
Chromosome is a genetic material. Each chromosome consist of two coiled filaments known as chromatids or chromonemata.
