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NTA Abhyas NEET2020BotanyCell Cycle and Cell DivisionPractice

Select incorrect statements. 1 . Diplotene stage is not recognized by the dissolution of the synaptonemal complex. 2 . Recombination nodules contain a recombinase enzyme. 3 . Interkinesis is generally short-lived. 4 . In anaphase II separation of homologous chromosomes (bivalent) separate to opposite poles.

Options

  1. A1 and 2
  2. B2 and 3
  3. C1 and 4
  4. D1 and 3

Correct answer

C. 1 and 4

Step-by-step solution

In the diplotene stage, the synaptonemal complex starts dissolution or disintegrating and the chromosomes start separating after crossing over. Recombination nodules contain a recombinase enzyme which helps in the process of recombination. Separation of homologous chromosomes (bivalent) occurs during anaphase I and this is known as disjunction, it results in a reduction in chromosome number to half. In anaphase II chromatids of a chromosome separate to opposite poles with the splitting the centromere taking place.

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