What question did this study set out to answer?

To identify the embryological mechanisms and genetic transmission governing differences in adult body size in rabbits.

September 1, 1929Journal of Morphology

The embryological basis of size inheritance in the rabbit

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Authors

WCW. E. CastleBrain Tumour Charity PGP. W. GregoryAnimal Husbandry and Veterinary Department

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Implication

Comparative developmental study demonstrates accelerated early embryonic cell division in large-breed rabbits, indicating that adult body size is genetically programmed from early cleavage.

Key Points

To identify the embryological mechanisms and genetic transmission governing differences in adult body size in rabbits.
Compared embryonic development between rabbit races exhibiting large and small adult body sizes.
Assessed cell multiplication rates, mass accumulation, and differentiation timing across developmental stages, including reciprocal crosses between large and small races.
Embryos of the large race undergo approximately one additional cell division by 48 hours post-mating, reaching roughly the 32-cell stage compared to the 16-cell stage in small-race embryos.
Growth rate differences are transmitted and influenced equally by sperm and egg cells in reciprocal crosses, operating independently from the rate of tissue differentiation.

Cite This Study

Castle et al. (1929) studied this question.

synapsesocial.com/papers/6a91a7075b38e717e65bb4e8 https://doi.org/10.1002/jmor.1050480104

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Implication

Comparative developmental study demonstrates accelerated early embryonic cell division in large-breed rabbits, indicating that adult body size is genetically programmed from early cleavage.

The embryological basis of size inheritance in the rabbit

Discussion

Member takes

Implication

Key Points

Cite This Study

The embryological basis of size inheritance in the rabbit

Discussion

Member takes

Implication

Key Points

Cite This Study

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