Longitudinal duality of each chromosome of a homologous pair becomes clearly evident showing formation of 4 chromatids from each bivalent at

Longitudinal duality of each chromosome of a homologous pair becomes clear, showing four chromatids of each bivalent at

Chromatids of each chromosome are separated during

Chromatids of each chromosome are separated during

Each chromosome composed of one chromatid in:-

Each chromosome composed of one chromatid in

Each chromosome composed of one chromatid in:-

Number of pairs of homologous chromosomes, no of chromatids and number of centromeres respectively

Assertion (A): The two chromosomes of a homologous pair possess the same structure. Reason (R ): The two chromosomes are derived from the same parent.

The exchange of segemnt of non-ssiter chromatids etween chromosomes of a homologous pair is called