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Related Experiment Videos

Ring lethal: an early embryonic failure in medium white turkeys.

T F Savage, J A Harper

    The Journal of Heredity
    |November 1, 1985
    PubMed
    Summary

    Ring lethal is an early embryonic failure in turkeys, identified by a distinct ring in the blastoderm after 48 hours of incubation. This autosomal recessive trait

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    Area of Science:

    • Poultry genetics and embryology
    • Avian reproductive biology
    • Developmental biology

    Background:

    • Ring lethal is an early embryonic failure observed in medium white turkeys.
    • The condition is macroscopically identifiable after 48 hours of incubation.

    Purpose of the Study:

    • To describe the characteristics of the ring lethal condition in turkeys.
    • To identify the inheritance pattern of the ring lethal disorder.
    • To propose a genetic symbol for the ring lethal trait.

    Main Methods:

    • Macroscopic examination of turkey blastoderms at 48 hours of incubation.
    • Pedigree analysis to determine inheritance patterns.
    • Genetic analysis to confirm trait expression.

    Main Results:

    • Ring lethal is characterized by a white ring of amorphous cells in the area opaca.
    • The disorder is inherited as an autosomal recessive trait, expressed in the homozygous condition.
    • Attempts to determine the specific cause of the gene's expression were unsuccessful.

    Conclusions:

    • Ring lethal is a genetically determined embryonic defect in turkeys.
    • The gene symbol 'rl' is proposed for this autosomal recessive trait.
    • Further research is needed to understand the molecular basis of ring lethal expression.

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