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Related Experiment Videos

[Nuclear function during early development of remote fish hybrids].

A A Neĭfakh

    Ontogenez
    |January 1, 1974
    PubMed
    Summary

    Paternal genome significantly contributes to the early development and viability of loach (Misgurnus fossilis) hybrids. This genetic contribution is evident from the blastula stage onwards, influencing embryonic survival and development.

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    [Foreign DNA in developing embryos of the loach Misgurnus Fossilis L].

    Molekuliarnaia biologiia·1988

    Area of Science:

    • Developmental Biology
    • Genetics
    • Ichthyology

    Context:

    • Investigates interspecies hybridization in fish using loach (Misgurnus fossilis) as the maternal parent.
    • Examines the role of paternal genome in the development of remote hybrids with various aquarial Cyprinids and Cobitids.
    • Utilizes haploid nucleocytoplasmic hybrids created by X-ray induced chromosome inactivation to assess paternal genome function.

    Purpose:

    • To determine the extent and timing of paternal genome participation in the development of loach hybrids.
    • To analyze the influence of paternal genes on embryonic viability and morphological development.
    • To compare the onset and intensity of morphogenetic function between hybrid and loach embryos.

    Summary:

    • Paternal genome actively participates in loach hybrid development from early stages (blastula) onwards.
    • Analysis of viability curves and mortality patterns in diploid and haploid hybrids reveals paternal gene function.
    • Heterologous nuclei activity, assessed by morphogenetic function onset, generally coincides with loach development, with exceptions like Brachydanio rerio.

    Impact:

    • Provides evidence for the crucial role of paternal genes in maintaining embryonic viability throughout development.
    • Highlights species-specific variations in paternal genome activation, as seen with Brachydanio rerio.
    • Contributes to understanding the genetic mechanisms underlying interspecies hybridization and embryonic development in fish.

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