Results 261 to 270 of about 801,183 (312)

Uncovering genomic diversity and signatures of selection in red Angus × Chinese red steppe crossbred cattle population. [PDF]

Sci Rep
Rostamzadeh Mahdabi E, Tian R, Tian J, Asadollahpour Nanaie H, Wang X, Zhao M, Li H, Dalai B, Sai Y, Guo W, Li Y, Zhang H, Esmailizadeh A.   +12 more
europepmc   +1 more source

Adaptability and stability analysis via GGE biplot in single, double, and interpopulation maize hybrids. [PDF]

Sci Rep
Gonçalves VML, Crevelari JA, Catarina RS, de Souza YP, Pereira MG.   +4 more
europepmc   +1 more source

Novel tools for genomic modification and heterologous gene expression in the phylum Planctomycetota. [PDF]

Appl Microbiol Biotechnol
Haufschild T, Hammer J, Rabold N, Plut V, Jogler C, Kallscheuer N.   +5 more
europepmc   +1 more source

Genetic homology and crossing over in the X and Y chromosomes of mammals [PDF]

Human Genetics, 1982
The "X-Y crossover model" described in this paper postulates the (1) the pairing observed between the X and the Y chromosome at zygotene is a consequence of genetic homology, (2) there is a single obligatory crossover between the X and Y pacing segments, and (3) the segment of the X which pairs with the Y is protected from subsequent inactivation ...
P. Burgoyne
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Unequal crossing over at the rRNA locus as a source of quantitative genetic variation

Nature, 1978
MUTATIONS, in the broad sense, are the source of genetic variation for evolutionary change, whether through the agency of natural or artificial selection. The contributions of new mutations to genetic variation in artificial selection lines are thought to be small, as estimates of the rate of generation of new genetic variation by mutation have been ...
Richard Frankham, Roderick K. Nurthen, David A. Briscoe   +2 more
openaire   +4 more sources

Evidence for separate genetic control of crossing over and chiasma maintenance in maize

Chromosoma, 1978
The meiotic cytological behavior of chromosomes in maize microsporocytes homozygous for the recessive mutant desynaptic was studied at various stages. It was found that following apparently normal pachytene synapsis there appears to be sporadic precocious desynapsis.
M. Maguire
openaire   +3 more sources

Genetic improvement of oysters: Current status, challenges, and prospects

Reviews in Aquaculture, 2023
Oysters are one of the most commercially important shellfish species and have been cultured for thousands of years. Oyster aquaculture supports the major aquaculture industries in many countries.
Kunyin Jiang, Chen Chen, Gaowei Jiang, Y. Chi, Chengxun Xu, L. Kong, Hong Yu, Shikai Liu, Qi Li   +8 more
semanticscholar   +1 more source

Population genetics of unequal crossing over

Journal of Molecular Evolution, 1975
The population genetics of unequal crossing over was examined for an infinite population with random mating. The following cases were considered: 1. There is an initial portion of duplicated genes which offer the opportunity for unequal crossing over, but the primary event leading to the duplication does not occur any more (model 1a). 2.
J. Krüger, F. Vogel
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Performance analysis of permutation cross—over genetic operators

Journal of Decision Systems, 1996
ABSTRACT We are interested here in the utilization of Genetic Algorithms (GA) as approximation methods for combinatorial optimization. They are stochastic methods using genetic operators on a population. For their design, two points must be worked: the general scheme of the algorithm with parameter adjustment and the design of chromosome contents and ...
Mane-Claude Portmann, Lamia Djerid, Pierre Villon   +2 more
openaire   +2 more sources

Genetics of Ustilago violacea. III. Crossing Over and Nondisjunction

Botanical Gazette, 1978
The frequency of crossing over between two sporidial color mutations, between mutant sites in the white (w) locus and the centromere, and between two complementing mutations in the w locus was determined by teliospore colony (intact tetrad) analysis.
M. L. Baird, E. D. Garber, M. E. Cattrall   +2 more
openaire   +2 more sources