Results 211 to 220 of about 18,943 (253)

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
openaire   +3 more sources

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
openaire   +4 more sources

Some of the next articles are maybe not open access.

Related searches:

Meiotic dysgenesis associated with behavioral mutants of Phycomyces

Current Genetics, 1983
Phycomyces mutants, recently isolated for enhanced bending responses (hypertropic phenotype), have unusual genetic properties. In sexual crosses between hypertropic mutants and other strains, the progeny showed the following features: a) many incomplete tetrads, b) distortion of segregation ratios, c) progeny with nonparental phenotypes when ...
I, López-Díaz, E D, Lipson
openaire   +2 more sources

Meiotic behavior of rye heterozygous for ditelocentric substitutions

Cytogenetics and Cell Genetics, 2008
Meiotic behavior has been investigated in rye plants carrying a heterozygous ditelocentric substitution for chromosomes 1R and 3R. Such a chromosomal rearrangement replaces a biarmed chromosome with two telocentrics, a situation karyotypically comparable to a Robertsonian translocation.
E, Benavente, J L, Santos
openaire   +2 more sources

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
openaire   +2 more sources

Meiotic behavior of five human reciprocal translocations

Cytogenetics and Cell Genetics, 2008
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
openaire   +2 more sources

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
openaire   +2 more sources

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
openaire   +2 more sources

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
openaire   +2 more sources

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.
openaire   +2 more sources