Zobrazeno 1 - 10
of 28
pro vyhledávání: '"H G, Callan"'
Publikováno v:
Chromosoma. 101:245-251
In the anuran Xenopus, as has been demonstrated previously in several species of urodele Amphibia, histone genes lie at the sphere organizer loci of the lampbrush chromosomes. They were located by in situ hybridization of a 3H-labelled histone H4 ant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ceb0209aec156433405b1ae4f0926e7
https://doi.org/10.1007/bf00365156
https://doi.org/10.1007/bf00365156
Publikováno v:
Methods in cell biology. 36
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::120b3c629d7c725cf09784d19bd05123
https://pubmed.ncbi.nlm.nih.gov/1811131
https://pubmed.ncbi.nlm.nih.gov/1811131
Publikováno v:
Journal of Cell Science. 15:145-161
Evidence has been obtained which indicates that disulphide bond crosslinks contribute to the morphological integrity of isolated lampbrush chromosomes (both chromomeres and lateral loops) and nucleoli. It is suggested that the progressive formation o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::250dfe882c5abd96c2aa59429ea80090
https://doi.org/10.1242/jcs.15.1.145
https://doi.org/10.1242/jcs.15.1.145
Autor:
H G, Callan, S M, Pearce
Publikováno v:
Journal of Cell Science. 37:125-141
Interlocked bivalents at 1st meiotic metaphase are relatively uncommon in spermatocytes of the newt Trituras vulgaris, but their frequency of occurrence can be significantly increased by subjecting newts to a 24-h heat shock. Newt spermatocytes are s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db064e0ff67b1fc249057c41389df2e7
https://doi.org/10.1242/jcs.37.1.125
https://doi.org/10.1242/jcs.37.1.125
Publikováno v:
Chromosoma. 97:43-54
The nucleolus organizer locus of Xenopus laevis lampbrush chromosomes was identified by in situ hybridization of a 3H-labelled probe complementary to 18S + 28S rDNA. The nucleolus organizer is an axial granule on chromosome III that lies four-fifths
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a40897eb68faf82acc03bc629127de0
https://doi.org/10.1007/bf00331794
https://doi.org/10.1007/bf00331794
Autor:
H. G. CALLAN
Publikováno v:
Journal of Cell Science. :327-335
Anilocra mediterranea has a diploid chromosome number of twelve, eight of the chromosomes having median, and four subterminal centromeres. The localization of chiasmata is extreme and is of a previously undescribed type, combining the terminal and ce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d6d715abe39f4376a8e328aee158e1b
https://doi.org/10.1242/jcs.s2-82.326.327
https://doi.org/10.1242/jcs.s2-82.326.327
Autor:
A. J. E. Orian, H. G. Callan
Publikováno v:
Journal of the Marine Biological Association of the United Kingdom. 36:129-142
The chromosomes of nine species of gammarids have been studied in oocytes and embryos. There is no evidence that polyploidy has played a part in gammarid evolution. Three of the species which we have studied,Gammarus pulex(L.),Marinogammarus marinus(
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0aad3844c1da464105a015cbc56ccc4
https://doi.org/10.1017/s0025315400017136
https://doi.org/10.1017/s0025315400017136
Autor:
H. G. Callan
Publikováno v:
Journal of Genetics. 41:349-374
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b5527e3aad791b34563f8a1598f95ba
https://doi.org/10.1007/bf02983027
https://doi.org/10.1007/bf02983027
Autor:
Julia Borragán Pastor, H. G. Callan
Publikováno v:
Journal of Genetics. 50:449-454
In the turbellarianDendrocoelum lacteum more chiasmata are formed in oocytes than in spermatocytes. Mean chiasma frequency per spermatocyte in six individuals ranges from 9·3±0·6 to 13·0±0·3; the range in oocytes is from 17·0±0·6 to 22·0±0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0072510bb75022d8e58372fa654ab9cd
https://doi.org/10.1007/bf02986840
https://doi.org/10.1007/bf02986840
Autor:
H G, Callan
Publikováno v:
Cold Spring Harbor Symposia on Quantitative Biology. 38:195-203
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac61bd43bee5166b6048277f90f3de21
https://doi.org/10.1101/sqb.1974.038.01.023
https://doi.org/10.1101/sqb.1974.038.01.023