Results 31 to 40 of about 10,937,438 (374)

Chromosome numbers of Trifolium species from Romania

Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 1987
Trifolium accessions belonging to 13 clover species have been collected during a joint germplasm collecting mission organized in cooperation between USDA (USA) and ASAS (Romania) and samples were analysed for chromosome numbers.
N. L. TAYLOR
doaj   +1 more source

Natural selection reduced diversity on human Y chromosomes [PDF]

, 2013
The human Y chromosome exhibits surprisingly low levels of genetic diversity. This could result from neutral processes if the effective population size of males is reduced relative to females due to a higher variance in the number of offspring from males
Lohmueller, Kirk E., Nielsen, Rasmus, Sayres, Melissa A. Wilson   +2 more
core   +5 more sources

Molecular Phylogenetics and Micromorphology of Australasian Stipeae (Poaceae, Subfamily Pooideae), and the Interrelation of Whole-Genome Duplication and Evolutionary Radiations in This Grass Tribe

Frontiers in Plant Science, 2021
The mainly Australian grass genus Austrostipa (tribe Stipeae) comprising approximately 64 species represents a remarkable example of an evolutionary radiation.
Natalia Tkach, Marcin Nobis, Julia Schneider, Hannes Becher, Hannes Becher, Grit Winterfeld, Surrey W. L. Jacobs, Martin Röser   +7 more
doaj   +1 more source

Cytomolecular identification of individual wheat-wheat chromosome arm associations in wheat-rye hybrids [PDF]

, 2013
Chromosome pairing in the meiotic metaphase I of wheatrye hybrids has been characterized by sequential genomic and fluorescent in situ hybridization allowing not only the discrimination of wheat and rye chromosomes, but also the identification of the
Badaeva ED, Badaeva ED, Bass HW, Bedbrook J, Berkman PJ, Cifuentes M, Cifuentes M, Cifuentes M, Colas I, Conley EJ, Contento A, Cuadrado A, Devos KM, Devos KM, Fedak G, Fernandez-Kalvin B, Ferrer E, Fominaya A, Gale MD, Gerlach WL, Gill BS, Hernandez P, Huang S, I. Molnár, Jauhar PP, Kamstra SA, Le HT, Logojan A, Lukaszewski AJ, M. Megyeri, M. Molnár-Láng, Martinez-Perez E, Martinez-Perez E, Miller TE, Molnár I, Molnár I, Molnár I, Molnár I, Molnár-Láng M, Molnár-Láng M, Mukai Y, Munkvold JD, Nagaki K, Naranjo T, Naranjo T, Naranjo T, Prieto P, Qi L, Riley R, Riley R, Sabot F, Schwarzacher T, Sepsi A, Sharp PJ, Szakács, Sánchez-Morán E, Tischner T   +56 more
core   +1 more source

Rapid interphase and metaphase assessment of specific chromosomal changes in neuroectodermal tumor cells by in situ hybridization with chemically modified DNA probes [PDF]

, 1988
Repeated DNAs from the constitutive heterochromatin of human chromosomes 1 and 18 were used as probes in nonradioactive in situ hybridization experiments to define specific numerical and structural chromosome aberrations in three human glioma cell lines ...
A.H.N. Hopman, Atkin, Bigner, Brigati, Burns, Burns, Carine, Cavenee, Comings, Cooke, Cooke, Cremer, D. Tesin, Dale, Devilee, Devilee, Dudin, Durnam, Gosden, Hadlaczky, Hall, Henn, Higgins, Hopman, Hopman, Hopman, Hopman, Hopman, Joseph, Julien, Kinzler, Kohl, L. Manuelidis, Landegent, Landegent, Langer-Safer, Leary, Lund Jorgensen, Maniatis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, McDermid, Müller, Müncke, Pinkel, Pinkel, Rappold, Schardin, Schwab, Shapiro, Siegel, T. Cremer, Therman, Trask, Willard, Wu, Yang   +64 more
core   +1 more source

Pre‐ and postzygotic mechanisms preventing hybridization in co‐occurring species of the Impatiens purpureoviolacea complex

Ecology and Evolution, 2021
In the species‐rich genus Impatiens, few natural hybrids are known, even though closely related species often occur sympatrically. In this study, we aim to bridge the gap between micro‐ and macro‐evolution to disentangle pre‐ and postzygotic mechanisms ...
Stefan Abrahamczyk, Michaela Jandová, Zuzana Líblová, Steven B. Janssens, Tomáš Dostálek, Norbert Holstein, Eberhard Fischer   +6 more
doaj   +1 more source

The elusive evidence for chromothripsis. [PDF]

, 2014
The chromothripsis hypothesis suggests an extraordinary one-step catastrophic genomic event allowing a chromosome to 'shatter into many pieces' and reassemble into a functioning chromosome.
Bafna, Vineet, Kinsella, Marcus, Patel, Anand   +2 more
core   +1 more source

Characterisation of species and diversity of Anopheles gambiae Keele Colony [PDF]

, 2016
Anopheles gambiae sensu stricto was recently reclassified as two species, An. coluzzii and An. gambiae s.s., in wild-caught mosquitoes, on the basis of the molecular form, denoted M or S, of a marker on the X chromosome. The An.
Inch, Donald, McGeechan, Sion, Mwangi, Jonathan M., Ranford-Cartwright, Lisa C., Richterova, Lenka, Smart, Graeme   +5 more
core   +14 more sources

Flow cytometry and chromosome numbers variation in argan tree Argania spinosa (L.) Skeels

Notulae Scientia Biologicae, 2023
Argania spinosa L. Skeels is an endemic species of west-central Morocco, which is characterized by a high diversity of morphological and genetic traits. It constitutes a natural resource for oleo-agro-sylvo-pastoral uses.
Ali EL BOUKHARI, Salma TABI, Abdelhamid EL MOUSADIK, Rachida EL BOULLANI, Abdelghani TAHIRI, Meriyem KOUFAN, Hamid BENYAHIA, Rachid BOUHARROUD, Naima AIT AABD   +8 more
doaj   +1 more source

Amplification of the androgen receptor may not explain the development of androgen-independent prostate cancer [PDF]

, 2001
Objective To examine the role of androgen receptor (AR) gene amplification and aneusomy of the X chromosome in the development of antiandrogen-resistant prostate cancer.
Bartlett, J.M.S., Edwards, J., Krishna, N.S., Mukherjee, R., Underwood, M.A., Watters, A.D.   +5 more
core   +1 more source