Post-fertilization effect of incompatibility factors in Mormoniella (original) (raw)

Summary

1. 1. Females from the stocks R pe-333, R ti-277, R st-940, and R oy-2 produce few or no female offspring when mated with + males. In each case, the reciprocal cross yields the normal percentage (85%) of female offspring.
2. 1. The females from these incompatible stocks contain active sperm within their spermathecae after mating with + males.
3. 1. In incompatible crosses, almost all eggs laid develop into males with no evidence that female embryos or larvae fail to develop.
4. 1. Egg maturation and fertilization normally follows a pattern similar to Habrobracon.
5. 1. Sperm from + males enter R ti-277 eggs but form a tangled mass of chromatin instead of chromosomes. The maturation divisions of the eggs are normal, and only the chromosomes of the egg pronuclei contribute to the development of the offspring.

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Author notes

1. George B. Saul 2nd
   Present address: Department of Biology, Middlebury College, Middlebury, Vermont, USA

Authors and Affiliations

1. Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire, USA
   Sandra L. Ryan & George B. Saul 2nd

Authors

1. Sandra L. Ryan
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2. George B. Saul 2nd
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Additional information

Communicated by E. Hadorn

This study was supported in part by a National Science Foundation grant (G 24322) to G. B. S. and a National Science Foundation fellowship to S. L. R.

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Ryan, S.L., Saul, G.B. Post-fertilization effect of incompatibility factors in Mormoniella.Molec. Gen. Genet. 103, 29–36 (1968). https://doi.org/10.1007/BF00271154

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• Received: 09 September 1968
• Issue Date: January 1968
• DOI: https://doi.org/10.1007/BF00271154

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