Human twinning is not linked to the region of chromosome 4 syntenic with the sheep twinning gene FecB.

@article{Duffy2001HumanTI,
  title={Human twinning is not linked to the region of chromosome 4 syntenic with the sheep twinning gene FecB.},
  author={David L Duffy and G. W. Montgomery and Judith J. Hall and Cerys Mayne and S C Healey and James O. Brown and Dorret I. Boomsma and Nicholas G. Martin},
  journal={American journal of medical genetics},
  year={2001},
  volume={100 3},
  pages={182-6}
}
The tendency to dizygotic (DZ) twinning is inherited in both humans and sheep, and a fecundity gene in sheep (FecB) maps to sheep chromosome 6, syntenic with human 4q21-25. Our aim was to see whether a gene predisposing to human DZ twinning mapped to this region. DNA was collected from 169 pairs and 17 sets of 3 sisters (trios) from Australia and New Zealand who had each had spontaneous DZ twins, mostly before the age of 35, and from a replication sample of 111 families (92 affected sister… CONTINUE READING

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