Results 251 to 260 of about 36,204 (291)

Analysis of Meiotic Telomere Behavior in the Mouse

2016
Linear eukaryotic chromosomes are capped by the telomeres, which consist of highly repetitive nucleotide sequences bound by several telomere-specific proteins. While the general role of telomeres is to protect chromosomes from degradation and end-to-end fusion, during meiosis they are assigned with a distinct and without doubt highly fascinating ...
Jana, Link, Ricardo, Benavente, Manfred, Alsheimer   +2 more
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Meiotic behavior of five human reciprocal translocations

Cytogenetic and Genome Research, 1976
Meiotic studies have been carried out in five human male translocation heterozygotes. An account of the cytological observations is given together with information concerning their reproductive history and fertility.
A C, Chandley, H, Seuánez, J M, Fletcher   +2 more
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A reexamination of the diploidlike meiotic behavior of polyploid cotton

Theoretical and Applied Genetics, 1976
Chromosome associations at pachytene, diakinesis, and metaphase I were analyzed in haploids of the allotetraploid G.hirsutwn, in the F1 hybrid between G.arboreum (A2) and G. raimondii (D5), and in the doubled hybrid 2(A2D2) in an effort to define more clearly the mechanism responsible for the diploidlike behavior of the natural allotetraploids.
I, El Jack Mursal, J E, Endrizzi
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Meiotic behavior of a supernumerary chromosome in Magnaporthe oryzae

Current Genetics, 2003
A 1.2-Mb DNA band from an isolate of Magnaporthe oryzae was detected in a pulsed-field gel. A chromosomal entity corresponding to this band was observed at the mitotic metaphase stage. This minichromosome, carrying many transposable elements and two telomeres, was transmitted to ascosporic F(1) cultures in a non-Mendelian manner with frequent changes ...
I, Chuma, Y, Tosa, M, Taga, H, Nakayashiki, S, Mayama   +4 more
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The Meiotic Behavior of the Drosophila Oocyte

1970
Publisher Summary This chapter discusses the events that take place during meiosis of the Drosophila oocyte. Prior to the meiotic prophase, the chromosomes attach to specific sites on the inner surface of the nuclear envelope. The chromosomes replicate their entire DNA except for the synaptomeres.
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Meiotic behavior of the X1X2Y1Y2 quadrivalent of the primateAlouatta caraya

Chromosome Research, 1996
A multiple sex chromosome system was found in three unrelated individuals of the primate Alouatta caraya. This mechanism is originated by a translocation between the Y chromosome and one of the autosomes (A7). Mitotic karyotypes show two small, acrocentric chromosomes (AY and YA), which are the translocation products.
M I, Rahn, M, Mudry, M S, Merani, A J, Solari   +3 more
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Meiotic behavior and DNA content in alloplasmic lines of maize

Genome, 1997
The cytoplasm of Zea mays ssp. mexicana (teosinte) affects several inherited traits when combined with genotypes of maize (Zea mays ssp. mays). The meiotic behavior and the total DNA content of four lines of maize with teosinte cytoplasm were compared with those of the parental lines. The results obtained suggest that the cytoplasm of teosinte promotes
L, Poggio, M, Rosato, C A, Naranjo
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The meiotic behavior of triploidy in a human 69,XXX fetus

Cytogenetic and Genome Research, 1978
Meiotic studies were made on the fetal ovaries of a triploid fetus, 69, XXX. The association modalities of the three chromosomes in human triploidy are the same as those described in several plant species; i.e., trivalents, bivalents and univalents can be found in the same nucleus.
J M, Luciani, M, Devictor, J, Boué, M, Freund, A, Stahl   +4 more
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Chromosomal abnormalities, meiotic behavior and fertility in domestic animals

Cytogenetic and Genome Research, 2008
Since the advent of the surface microspreading technique for synaptonemal complex analysis, increasing interest in describing the synapsis patterns of chromosome abnormalities associated with fertility of domestic animals has been noticed during the past three decades. In spite of the number of scientific reports describing the occurrence of structural
Villagomez, D.A.F., Pinton, Alain
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Meiotic Behavior and Effects of B Chromosomes in Tall Fescue

Journal of Heredity, 1990
Chromosome pairing and chiasma frequency were studied in seven genotypes of allohexaploid tall fescue (Festuca arundinacea Schreb., 2n = 6x = 42) from the Swiss ...
P P, Jauhar, C F, Crane
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