Intercrosses
Mostrando 1-12 de 38 artigos, teses e dissertações.
-
1. Desenvolvimento e uso de marcadores SSR E DArT para estudos de diversidade genética em macadâmia (Macadamia integrifolia) / Development and use of SSR and DArT genetic markers to study genetic diversity in macadamia (Macadamia integrifolia)
A macadâmia (Macadamia integrifolia Maiden &Betche) é uma nogueira arbórea originária das florestas tropicais australianas. Sua distribuição natural ocorre por quase toda a costa leste da Austrália. No Brasil, foi introduzida em 1931, mas sua expansão aconteceu a partir da década de 70. As variedades comerciais são originadas de duas espécies, Mac
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/05/2012
-
2. Quadruple Hybrids in the F1 Generation from OENOTHERA NUTANS and OENOTHERA PYCNOCARPA, with the F2 Generations, and Back- and Inter-Crosses
-
3. Quadruple Hybrids in the F1 Generation from OENOTHERA NUTANS and OENOTHERA PYCNOCARPA, with the F2 Generations, and Back- and Inter-Crosses
-
4. The Robustness of Recombination Frequency Estimates in Intercrosses with Dominant Markers
The robustness of the maximum likelihood estimates of recombination frequencies has been investigated in double intercrosses with complete dominance at both loci. The robustness was investigated with respect to bias in the recombination frequency estimates due to: (1) limited sample sizes, (2) heterogeneity in recombination frequencies between sexes or among
-
5. Mammalian DNA topoisomerase IIIα is essential in early embryogenesis
Targeted disruption of the mouse TOP3α gene encoding DNA topoisomerase IIIα was carried out to study the physiological functions of the mammalian type IA DNA topoisomerase. Whereas heterozygous top3α+/− mutant mice were found to resemble phenotypically their TOP3α+/+ litermates, no viable top3α−/− homozygotes were found among over 100 progeny of t
The National Academy of Sciences.
-
6. Iron Status in Mice Carrying a Targeted Disruption of Lactoferrin
Lactoferrin is a member of the transferrin family of iron-binding glycoproteins present in milk, mucosal secretions, and the secondary granules of neutrophils. While several physiological functions have been proposed for lactoferrin, including the regulation of intestinal iron uptake, the exact function of this protein in vivo remains to be established. To d
American Society for Microbiology.
-
7. Lack of Degeneration of Loci on the Neo-Y Chromosome of Drosophila Americana Americana
The extent of genetic degeneration of the neo-Y chromosome of Drosophila americana americana has been investigated. Three loci, coding for the enzymes enolase, phosphoglycerate kinase and alcohol dehydrogenase, have been localized to chromosome 4 of D. a. americana, which forms the neo-Y and neo-X chromosomes. Crosses between D. a. americana and D. virilis o
-
8. Deficiency of Reproductive Tract α(1,2)Fucosylated Glycans and Normal Fertility in Mice with Targeted Deletions of the FUT1 or FUT2 α(1,2)Fucosyltransferase Locus
The fucose α(1→2) galactose β structure is expressed by uterine epithelial cells in the mouse and has been implicated in blastocyst adhesion events thought to be required for murine implantation. Fucα(1→2)Galβ moieties and cognate fucosyltransferases are also expressed by epithelial cells of the male reproductive tract and have been implicated in spe
American Society for Microbiology.
-
9. Targeted mutation in the neurotrophin-3 gene results in loss of muscle sensory neurons.
Neurotrophin 3 (NT-3) is one of four related polypeptide growth factors that share structural and functional homology to nerve growth factor (NGF). NT-3 and its receptor, called neurotrophic tyrosine kinase receptor type 3 (Ntrk3; also called TrkC), are expressed early and throughout embryogenesis. We have inactivated the NT-3 gene in embryonic stem (ES) cel
-
10. Chromosome Pairing in Maize
This report summarizes our observations at pachytene on opposite-arms intercrosses between stocks of interchanges that involve chromosomes 1 and 5 in maize.—Pairing does not begin at the centromeres in these intercrosses.—We propose a model which assumes different probability values along each chromosome arm for the initial or primary site of pairing. Ob
-
11. TAF10 (TAFII30) Is Necessary for TFIID Stability and Early Embryogenesis in Mice
TAF10 (formerly TAFII30), is a component of TFIID and the TATA box-binding protein (TBP)-free TAF-containing complexes (TFTC/PCAF/STAGA). To investigate the physiological function of TAF10, we disrupted its gene in mice by using a Cre recombinase/LoxP strategy. Interestingly, no TAF10−/− animals were born from intercrosses of TAF10+/− mice, indicating
American Society for Microbiology.
-
12. Impaired fertility in mice deficient for the testicular germ-cell protease PC4
PC4 is a member of the proprotein convertase family of serine proteases implicated in the processing of a variety of polypeptides including prohormones, proneuropeptides, and cell surface proteins. In rodents, PC4 transcripts have been detected in spermatocytes and round spermatids exclusively, suggesting a reproductive function for this enzyme. In an effort
The National Academy of Sciences of the USA.