Trisomy-3,4 and triploidy (3A-ZZZW) in chick embryos: autosomal and sex chromosomal nondisjunction in meiosis.

@article{Bloom1970Trisomy34AT,
  title={Trisomy-3,4 and triploidy (3A-ZZZW) in chick embryos: autosomal and sex chromosomal nondisjunction in meiosis.},
  author={Stephen Bloom},
  journal={Science},
  year={1970},
  volume={170 3956},
  pages={457-8}
}
The first known cases of trisomy-3, trisomy-4, and triploidy (3A-ZZZW) in chickens are reported. The trisomic embryos were near death at 4 days of incubation; the triploid embryo appeared normal and probably could have developed further. Although the triploid (3A-ZZZW) was found after sampling more than 2000 embryos, the trisomic-3 and trisomic-4 embryos were discovered in the first sampling of a line of chickens selected for low egg production. These studies suggest that the sex chromosomes (Z… CONTINUE READING

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