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  • 1990-1994  (4)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Fine-tuning of utterance length to preverbal infants: effects on later language development (1990)
    Cambridge : Cambridge University Press
    Journal of child language 17 (1990), S. 511-525 
    Details
    ISSN: 0305-0009
    Source: Cambridge Journals Digital Archives
    Topics: Linguistics and Literary Studies
    Notes: The purpose of this study was to determine (1) whether mothers simplify their speech during the second half of the first year of development when infants begin to comprehend words and use gestures to communicate intentionally, and (2) whether individual differences in mothers' speech adjustments influence their infants' later language acquisition. The subjects for the study were 14 mother-infant pairs from a medically low risk sample who were followed longitudinally. Mothers' mean length of utterance (MLU) was calculated from transcripts of face-to-face interaction when the infants were 0;3, 0;6, and 0;9 in age. Mothers who provided responsive and stimulating environments, as indicated by HOME scores, also reduced their MLU over the age range studied. Moreover, mothers' MLU adjustments during the first year were more predictive than the HOME scale in forecasting receptive language development at 1; 6. In contrast, expressive language abilities at 1; 6 were unrelated to the environmental variables measured but were predicted by child characteristics such as the infant's sex. These results suggest that a mother's ability to ‘fine-tune’ her early linguistic input may be predictive of her child's later receptive language functioning. Precursors of fine-tuning, such as maternal beliefs in reciprocity and infant object orientation, are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0305000900010862
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The gene for proliferating cell nuclear antigen (Pcna) maps to mouse Chromosome 2 (1992)
    Springer
    Mammalian genome 3 (1992), S. 286-289 
    Details
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The structural gene for proliferating cell nuclear antigen (Pcna) has been mapped to mouse Chromosome (Chr) 2 by use of a PCR-based assay. With somatic cell hybrids, Pcna was mapped between the T(2;4)13H and T(2;4)1Sn breakpoints. An interspecific backcross was employed to map Pcna 1.9±1.3 cM distal to Il-lb. This was confirmed by mapping Pcna in the BXH recombinant inbred (RI) strains; no recombinants were seen between Il-la and Pcna. In addition, a PCNA-related sequence (Pcna-rsl) was mapped to Chr 19 in the BXH RI strains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00292157
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Comparative mapping of mouse Chromosome 4 and human Chromosome 9: Lv, Orm, and Hxb are closely linked on mouse Chromosome 4 (1992)
    Springer
    Mammalian genome 3 (1992), S. 247-249 
    Details
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The genes for orosomucoid (ORM-1 and ORM-2), delta-aminolevulinate dehydratase (ALAD), and hexabrachion or tenascin (HXB) all map to the q31-qter region of human Chromosome (Chr) 9. The mouse homolog of each of these genes has been mapped to Chr 4, but hexabrachion has not previously been mapped by linkage analysis. We have now ordered Orm-1, Lv (the mouse homolog of ALAD), and Hxb in an interspecific backcross panel, by use of tyrosinase related protein-1, Tyrp-1, whose human homolog maps to 9p13-pter (Abbott et al., Genomics 1991) as a reference locus. No recombinants were identified in 124 animals between Lv and Orm-1. Hxb was found to be 1.6 cM distal to Lv and Orm-1, and 4.8 cM proximal to Tyrp-1, or b. These data therefore contribute to our knowledge of the conserved synteny between HSA 9q and MMU 4.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00292151
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Mapping of the structural gene for S-adenosyl homocysteine hydrolase to mouse Chromosome 2, and related sequences to Chromosomes 8 and X (1992)
    Springer
    Mammalian genome 3 (1992), S. 633-636 
    Details
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Comparative mapping studies in human and mouse have shown that, to date, human Chromosome (Chr) 20 is completely syntenic with distal mouse Chr 2. The structural locus for S-adenosyl-l-homocysteine hydrolase (EC 3.3.1.1) in human, AHCY, maps to 20 qter→q13.1, and we report here that the homologous locus in the mouse, Ahcy, maps to distal mouse Chr 2 with gene order Pcna-Ahcy-Ada. Analysis of 123 progeny of an interspecific backcross between a laboratory stock, AN, and Mus spretus using a rat cDNA probe revealed the presence of at least two other Ahcy-related sequences segregating independently in the mouse genome. One, Ahcy-rs1, was mapped to Chr 8 in the BXH recombinant inbred strains, and the other, Ahcy-rs2, shows a pattern of inheritance consistent with X-linkage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00352480
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    Paper (German National Licenses)
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