Question

Presence of interzonal fibres is a major difference of spindle fibre types between

• A. Prophase - Metaphase
• B. Metaphase - Anaphase
• C. Both of them
• D. None of them

Answer 1

The correct option is B Metaphase - Anaphase

Metaphase:

Every chromosome is at­tached to both the axle shafts by unmistakable chromosome filaments, one for every chromatid. Chromosome strands presently fix. This expedites the chromosomes the equator of the axle. The marvel of bring­ing the chromosomes on the equator of the shaft is called congression.

Anaphase A:

They may stay associated with one another by between zonal strands. Simul­taneously, the shaft prolongs. In anaphasic development of chromosomes, the centromeres lead the way while the appendages trail behind. Thus the anaphasic chromosomes show up V, L-, J-and I-molded. The shapes are framed separately in metacentric, sub-metacentric, acrocentric and telocentric chromosomes.

So the correct answer is ' Metaphase - Anaphase'.