Results 71 to 80 of about 4,323 (204)

How to make a sex chromosome [PDF]

, 2016
Sex chromosomes can evolve once recombination is halted between a homologous pair of chromosomes. Owing to detailed studies using key model systems, we have a nuanced understanding and a rich review literature of what happens to sex chromosomes once ...
A Auton, A Auton, A Burt, A Kong, A McNair, AE Wright, AE Wright, AG Hinch, AK Chippindale, AST Papadopulos, B Charlesworth, B Charlesworth, B Charlesworth, B Charlesworth, B Lemos, B Payer, B Vicoso, B Vicoso, B Vicoso, BT Lahn, C Dufresnes, C Kupper, C Lemaitre, C Mullon, D Bachtrog, D Bachtrog, D Bachtrog, D Bachtrog, D Bachtrog, D Charlesworth, D Charlesworth, D Charlesworth, E Suomalai, ED Parvanov, F Baudat, GS van Doorn, GS van Doorn, H Muller, H Skaletsky, H Wallace, HK Moghadam, HM Natri, I Miura, IL Berg, J Haldane, J Hough, J Ironside, J Kitano, J Lange, J Wang, JA Tennessen, JE Mank, JE Mank, JE Mank, JE Mank, JF Flot, JL Feder, JP Wang, JR Ser, K Choi, K Matsubara, LB Koerich, LD Brooks, M Joron, M Nakamura, M Roesti, M Rovatsos, M Stock, M Stock, M White, MA Wilson, MG Poggio, MJ Wyman, MJD White, MT Ross, MV Chibalina, N Perrin, Q Zhou, Q Zhou, Q Zhou, R Bergero, R Bergero, R Bergero, R Bergero, R Gorelick, R Ming, RA Fisher, RB Roberts, RB Spigler, RS Pandey, S Ahmed, S Grozeva, S Lamichhaney, S Myers, S Myers, S Naurin, S Nokkala, S Singhal, S Yoshimoto, SS Renner, T Dobzhansky, T Dobzhansky, T Dobzhansky, T Gamble, T Kamiya, T Lenormand, T Lenormand, T Morgan, VB Bardella, WR Rice, WR Rice, YQS Soh, ZY Liu, Ö Winge   +113 more
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Recent sex chromosome divergence despite ancient dioecy in the willow Salix viminalis. [PDF]

, 2017
Sex chromosomes can evolve when recombination is halted between a pair of chromosomes, and this can lead to degeneration of the sex-limited chromosome.
Berlin, S., Liu Conze, L., Mank, J.E., Pucholt, P., Wright, A.E.   +4 more
core   +2 more sources

Nine new species of Begonia (Begoniaceae) from South and West Sulawesi, Indonesia [PDF]

, 2011
Nine new species of Begonia (Begoniaceae), Begonia comestibilis D.C.Thomas & Ardi, B. insueta D.C.Thomas & Ardi, B. lasioura D.C.Thomas & Ardi, B. nobmanniae D.C.Thomas & Ardi, B. prionota D.C.Thomas & Ardi, B.
Ardi, WH, Hughes, M, Thomas, DC
core   +1 more source

Occurrence of Intersex in the Marine Mussel Perumytilus purpuratus (Mollusca: Bivalvia): Does Gonadal Parasitism Play a Role?

Biology
Intersexuality is a reproductive phenomenon that occurs in some gonochoric species and refers to the simultaneous presence of both male and female gametes within the same individual.
Pablo A. Oyarzún, Sebastián Diaz, Sara M. Rodríguez, Gonzalo Ruiz-Tagle, José J. Nuñez, Jorge E. Toro   +5 more
doaj   +1 more source

Mating system, sex ratio, and persistence of females in the gynodioecious shrub Daphne laureola L. (Thymelaeaceae) [PDF]

, 2004
Although in gynodioecious populations male steriles require a fecundity advantage to compensate for their gametic disadvantage, southern Spanish populations of the long-lived shrub Daphne laureola do not show any fecundity advantage over hermaphrodites ...
Azizan, Amizon, Büchs, Jochen, Duarte, Tiago M., Fonseca, João A., Giese, Heiner, Hermann, Robert, Kümmel, Anne, Liao, Anping, Peter, Cyril Patrick   +8 more
core   +1 more source

The Evolution of Dioecy-Concluding Remarks

Annals of the Missouri Botanical Garden, 1984
Since the pioneer work of Darwin on the evolution of sexual systems in plants (Darwin, 1877a, 1877b) no sexual strategy in recent years has attracted as much attention as dioecy. First, a number of population genetic models were developed in the 1970s to trace the evolution of dioecy via different pathways (Lloyd, 1975, 1976, 1979; Ross, 1970, 1978 ...
openaire   +2 more sources

Increased diversification rates follow shifts to bisexuality in liverworts [PDF]

, 2016
Shifts in sexual systems are one of the key drivers of species diversification. In contrast to angiosperms, unisexuality prevails in bryophytes. Here, we test the hypotheses that bisexuality evolved from an ancestral unisexual condition and is a key ...
A. Jonathan Shaw, Alain Vanderpoorten, Antonin Machac, Aurélie Désamoré, Baker, Baker, Barrett, Beaulieu, Benassi, Benjamin Laenen, Bernard Goffinet, Bisang, Bisang, Bischler, Blanka Shaw, Bouchenak-Khelladi, Brzyski, Cheptou, Crawford, Cusimano, Cymon J. Cox, De Vos, Devos, Dong, Donoghue, Eppley, FitzJohn, FitzJohn, Frankham, Fritsch, Goldberg, Harmon, Heilbuth, Heilbuth, Heinrichs, Horsley, Hutsemékers, Jairo Patiño, Jesson, Johnson, Klips, Käfer, Käfer, Kürschner, Laenen, Laenen, Litsios, Liu, Longton, Longton, Lynch, Machac, Maddison, Maddison, McDaniel, McDaniel, McLetchie, Mooers, Nieminen, Oakley, Pagel, Paterson, Patiño, Patiño, Patiño, Pellicer, Rabosky, Renner, Rydgren, S. Robbert Gradstein, Schluter, Schuster, Schwery, Shortlidge, Stark, Stark, Stark, Taylor, Vamosi, Vamosi, Villarreal, Weller, Wiens, Wright   +83 more
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Mating dynamics in a nematode with three sexes and its evolutionary implications [PDF]

, 2015
Nematodes have diverse reproductive strategies, which make them ideal subjects for comparative studies to address how mating systems evolve. Here we present the sex ratios and mating dynamics of the free-living nematode Rhabditis sp.
A Choe, A Choe, A Kaliszewicz, A Pires-daSilva, AD Cutter, AD Stewart, CI Bargmann, CW LaMunyon, D Charlesworth, D Charlesworth, DC Shakes, DE Wolf, DW Zimmerman, E Maupas, EM Hedgecock, GJ Langford, GJ Langford, I Theologidis, J Chaudhuri, J Srinivasan, JM Simon, JR Chasnov, JR Chasnov, JR Chasnov, JR Pannell, K Kiontke, K Kiontke, KC Kiontke, L Avery, LE Perry, LR Garcia, LT Morran, LT Morran, MA Félix, ME Viney, ML Blaxter, MR Baker, MT Ghiselin, N Bose, N Kanzaki, NS Morsci, R Armoza-Zvuloni, R Shinya, RA Butcher, SC Weeks, SH von Reuss, SM Eppley, SS Renner, T Goodey, VV Tkach, W Sudhaus, WD Hamilton, WE Mayer, WE Mayer, WM Runey, Y Kuzmin, Z Wang   +56 more
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Retrotransposon Proliferation Coincident with the Evolution of Dioecy in Asparagus

G3: Genes, Genomes, Genetics, 2016
Current phylogenetic sampling reveals that dioecy and an XY sex chromosome pair evolved once, or possibly twice, in the genus Asparagus. Although there appear to be some lineage-specific polyploidization events, the base chromosome number of 2n = 2× = 20
Alex Harkess, Francesco Mercati, Loredana Abbate, Michael McKain, J. Chris Pires, Tea Sala, Francesco Sunseri, Agostino Falavigna, Jim Leebens-Mack   +8 more
doaj   +1 more source

Population Structure and Spatial Pattern in the Dioecious Shrub Ceratiola ericoides [PDF]

, 1994
The dioecious shrub Ceratiola ericoides (Florida rosemary) dominates xeric, infrequently burned Florida scrub vegetation, often to the near-exclusion of other woody species.
Abrahamson, Allen, Allen, Alliende, Antos, Bawa, Bierzychudek, Briggs, Brown, Christman, Clewell, Cox, Crawford, Darwin, David J. Gibson, Dawson, Eric S. Menges, Faliński, Faliński, Fisher, Gibson, Goodall, Grant, Greig-Smith, Hammill, Herrera, Hopkins, Houle, Hubbell, Johnson, Johnson, Johnson, Johnson, Kaplan, Keeley, Keeley, Kilian, Korpelainen, Korpelainen, Lloyd, Lovett Doust, Muir, Myers, Opler, Purrington, Sakai, Smith, Uphof, Valk, Vasiliauskas, Walker, Wallace, Willson, Willson, Wright, Wunderlin   +55 more
core   +2 more sources