NTA Abhyas NEET2020BotanyCell Cycle and Cell DivisionPractice
How many of the given statements are incorrect? A . Nucleolus and nuclear membrane disappear in prophase. B . Synaptonemal complex formation occurs during zygotene. C . The enzyme responsible for crossing over in pachytene is recombinase. D . Chiasmata formation occurs in diakinesis.
Options
- AOne
- BTwo
- CThree
- DFour
Correct answer
A. One
Step-by-step solution
Nucleolus and nuclear membrane disappear during prophase and reappears during telophase of cell division. Synaptonemal complex is a protein network that holds two chromosomes of a bivalent formed during synapsis in the zygotene of prophase I of meiosis. Chiasmata formation arises during diplotene stage