M. Margaret Richardson
Articles written in Journal of Genetics
Volume 31 Issue 1 June 1935 pp 101-117
1. Meiosis is normal and has been followed through all stages from pachytene to second metaphase in
2. The satellited
3. The two chromosomes of a bivalent are coiled about one another in the early stages. Uncoiling is gradual and complete by diakinesis.
4. Bivalents of the
5. Similar chromosomes of
6. Chiasma frequency at mid-diakinesis is almost directly proportional to length.
Volume 31 Issue 1 June 1935 pp 119-143
1. Univalent formation in progeny from a diploid branch of a haploid individual of
2. A significant difference in the amount of univalent formation is found between two plants, and between two buds on the same plant.
3. Chiasma frequency is reduced in all three kinds of bivalents, and there is an almost direct relation between the amount of chiasma formation and the size of chromosomes. This is shown by the percentage of univalents and the mean number of chiasmata per bivalent.
4. Univalent homologous chromosomes frequently lie in juxtaposition at diakinesis. This is considered to be due to their previous association and coiling at pachytene and early diplotene.
Volume 32 Issue 3 July 1936 pp 411-450
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