Results 151 to 160 of about 23,176 (197)

The canonical equation of adaptive dynamics for Mendelian diploids and haplo-diploids [PDF]

Interface Focus, 2013
One of the powerful tools of adaptive dynamics is its so-called canonical equation (CE), a differential equation describing how the prevailing trait vector changes over evolutionary time.
Johan Anton Jacob Metz, Carolien G de Kovel   +1 more
exaly   +8 more sources

Heterozygote advantage as a natural consequence of adaptation in diploids

Proceedings of the National Academy of Sciences of the United States of America, 2011
Molecular adaptation is typically assumed to proceed by sequential fixation of beneficial mutations. In diploids, this picture presupposes that for most adaptive mutations, the homozygotes have a higher fitness than the heterozygotes.
Philipp W Messer, Dmitri A. Petrov, Benjamin J Callahan   +2 more
exaly   +2 more sources

Molecular epidemiology of clonal diploids: A quick overview and a short DIY (do it yourself) notice

Infection, Genetics and Evolution, 2006
In this short review we report the basic notions needed for understanding the population genetics of clonal diploids. We focus oil the consequences of clonality on the distribution of genetic diversity within individuals, between individuals and between ...
Thierry De Meeûs, Laurent Lehmann, François Balloux   +2 more
exaly   +1 more source

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EMBRYOLOGY OF DIPLOID × DIPLOID AND DIPLOID × TETRAPLOID CROSSES IN POINSETTIA

Canadian Journal of Genetics and Cytology, 1969
Hybridization between diploid cultivars of poinsettia results in abundant seed production. However, with the diploid used as the maternal parent in crosses with tetraploids, less than 1% viable seedlings are realized. Cytological observations indicated a 2:3:2 chromosome number ratio of the embryo, endosperm and maternal tissue in diploid crosses with
Daniel Milbocker, Kenneth Sink
openaire   +1 more source

Polyploidy and diploidization in soybean

Molecular Breeding, 2023
Polyploidy is widespread and particularly common in angiosperms. The prevalence of polyploidy in the plant suggests it as a crucial driver of diversification and speciation. The paleopolyploid soybean (Glycine max) is one of the most important crops of plant protein and oil for humans and livestock.
Jingya Yuan, Qingxin Song
openaire   +2 more sources

Diploid parthenogenesis and androgenesis in diploid Solanum

Euphytica, 1972
Diploid parthenogenetic and androgenetic plants were found in certain interspecific hybrid combinations in diploid Solanum. Self progenies of parthenotes of S. verrucosum appeared highly uniform and 100% homozygous for resistance to Race 1.2.3.4 of Phytophthora infestans. They can be of prime importance for breeding if homozygous lines are needed.
M. M. F. Abdalla, J. G. Th. Hermsen
openaire   +1 more source

Diploids in Microsporum gypseum

Mycopathologia et Mycologia Applicata, 1974
The paper studies diploids in dermatophyteMicrosporum gypseum. They were isolated as the more rapidly growing sectors from heterokaryons on minimal medium. They are characterized by their wild morphology, conidiation and growth rate, and they are prototrophic. In their genome they contain all the markers present in both mutant components.
K, Lenhart, N, Hejtmánková, E, Lenhartová, S, Komenda   +3 more
openaire   +2 more sources

Formation of asci with two diploid spores by diploid cells of Saccharomyces

Canadian Journal of Microbiology, 1972
Fifteen yeast strains that produced predominantly two-spored asci were found to include three strains having no more than two nuclei per ascus. The progeny of the spores of these three strains were capable of sporulation without conjugation. Deoxyribonucleic acid (DNA) determinations showed that both vegetative cells and spores were diploid ...
N S, Grewal, J J, Miller
openaire   +2 more sources

On the applicability of diploid genetic algorithms

AI & SOCIETY, 2015
The heuristic search processes like simple genetic algorithms help in achieving optimization but do not guarantee robustness so there is an immediate need of a machine learning technique that also promises robustness. Diploid genetic algorithms ensure consistent results and can therefore replace Simple genetic algorithms in applications such as test ...
Harsh Bhasin, Sushant Mehta
openaire   +2 more sources