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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How many nucleosomes are found in helical coil of $30\ nm$ chromatin fibre
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Epistasis implies
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- [AIIMS 1985]
In erythroblastosis foetalis, which factors of the mother pass through placenta into the foetus
In erythroblastosis foetalis, which factors of the mother pass through placenta into the foetus
$MN$ factors are due to
$MN$ factors are due to