The evidence that crossing over occurs at four stranded stage and not at two stranded stage of the chromosomes, comes from
The evidence that crossing over occurs at four stranded stage and not at two stranded stage of the chromosomes, comes from
- A
$2 : 2 : 2 : 2$ arrangement of ascospores in Neurospora
- B
$4 : 4$ arrangement of ascospores in Neurospora
- C
Studies of meiosis in maize
- D
Studies on linkage maps of chromosomes in Drosophila
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- [AIIMS 2001]