NEET 2016 Biology question
In meiosis crossing over is initiated at:
Answer: (1)
Solution
In prophase I of meiosis: leptotene - chromosomes condense; zygotene - homologous chromosomes pair (synapsis) forming the synaptonemal complex; pachytene - bivalents (tetrads) are fully formed, recombination nodules appear, and crossing over between non-sister chromatids of homologous
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