Zobrazeno 1 - 10 of 13 pro vyhledávání: '"P. Ch. Koller"'
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'Pointed,' and the constitution ofX-chromosome inDrosophila obscura
Autor: P. Ch. Koller
Publikováno v: Journal of Genetics. 26:215-229
1. The behaviour of two modifiers inDrosophila obscura, m1, located in theX-chromosome at 13·7 units fromPI andm2, linked with orange in the third linkage group and located at 9·2 units from orange, is described. 2. PII, an allelomorph of the previ
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b2c63776741985b8a31220381940698d
https://doi.org/10.1007/bf02984690
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5
X.—Spermatogenesis inDrosophila obscuraFallen. I. The Cytological Basis of Suppression of Crossing-over
Autor: Thelma Townson, P. Ch. Koller
Publikováno v: Proceedings of the Royal Society of Edinburgh. 53:130-146
During recent years it has become increasingly possible to interpret unusual genetic phenomena by reference to peculiarities in chromosome behaviour. Examples of such cytological explanation are found in the studies of triploidy by Bridges and Anders
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ab90f3fcf608f3f5796104111e81d8ae
https://doi.org/10.1017/s0370164600015534
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6
Cytological Studies in Crepis aurea and C. rubra
Autor: P. Ch. Koller
Publikováno v: CYTOLOGIA. 6:281-288
1. Crepis aurea and C. rubra have 10 chromosomes in their diploid sets. The chromosomes differ only in absolute size, the position of attachment constriction being nearly similar in both.2. In C. rubra a third strain is described, which differs from
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3d773587437dd885723da0aa9e829de2
https://doi.org/10.1508/cytologia.6.281
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7
Further studies inTradescantia virginiana var.humilis andRhoeo discolor
Autor: P. Ch. Koller
Publikováno v: Journal of Genetics. 26:81-96
1. InTradescantia virginiana var.humilis the following observations were made on meiosis: (i) arrest of terminalisation of chiasmata (ii) pairing of unequal chromosomes (iii) torsion of chromatids (iv) morphological change in chromosome (v) pairing o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71a412cab291a5cb3c7d8ab4408dffa9
https://doi.org/10.1007/bf02991445
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8
VII.—Spermatogenesis inDrosophila pseudo-obscuraFrolowa. II. The Cytological Basis of Sterility in Hybrid Males of Races A and B
Autor: P. Ch. Koller
Publikováno v: Proceedings of the Royal Society of Edinburgh. 54:67-87
Two races or physiological species (A and B) were found inDrosophila pseudo-obscuraby Lancefield (1922), who described later (1925, 1929) the genetical behaviour of the interracial hybrids. The present writer (1931, 1932,a, b) has reported further in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::258ffb4aee710709b8b2835d7b7d5a10
https://doi.org/10.1017/s0370164600016059
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9
Der Einfluss chemisch reinen Thyroxins auf die Entwicklung von Drosophila melanogaster
Autor: P Ch Koller
Publikováno v: Wilhelm Roux' Archiv f�r Entwicklungsmechanik der Organismen. 125:663-672
1. Chemically pure thyroxin solution was used to study the effect on the metamorphic rate, fecundity, sex ratio, size and crossing-over ofDrosophila melanogaster. 2. The data obtained show thatDrosophila does not respond to thyroxin in the same way a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::22127cb433ac2a7ff0d3470745b084d1
https://doi.org/10.1007/bf00576574
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