SUMMARY The effect of high temperature on chiasma formation during oogenesis has been studied in the grasshopper _Melanoplus femur-rubrum_. Prolonged heat treatment (40° C.) during

mid-prophase of meiosis causes a reduction in the mean chiasma frequency per cell. Only those bivalents in which more than one chiasma occurs are affected by the heat. The pattern of chiasma

frequency response to heat is similar to that which occurs in males of the same species. SIMILAR CONTENT BEING VIEWED BY OTHERS GAMETE DIMORPHISM OF THE ISOGAMOUS GREEN ALGA (_CHLAMYDOMONAS

REINHARDTII_), IS REGULATED BY THE MATING TYPE-DETERMINING GENE, _MID_ Article Open access 06 December 2022 PHYSIOLOGICAL ASPECTS OF SEX DIFFERENCES AND HALDANE’S RULE IN _RUMEX HASTATULUS_

Scholar  * Church, K. 1972. Meiosis in the grasshopper. II. The preleptotene spiral stage during oogenesis and spermatogenesis in _Melanoplus femur-rubrum_. _Can J Genet Cytol_, 14, 397–401.

Article  CAS  Google Scholar  * Church, K, and Wimber, D E. 1969. Meiosis in the grasshopper: chiasma frequency after elevated temperature and X-rays. _Can J Genet Cytol_, 11, 209–216.

Article  CAS  Google Scholar  * Grell, R F, and Chandley, A C. 1965. Evidence bearing on coincidence of exchange and DNA replication in the oocyte of _Drosophila melanogaster_. _Proc Natl

Acad Set US_, 53, 1340–1346. Article  CAS  Google Scholar  * Henderson, S A. 1966. Time of chiasma formation in relation to the time of deoxyribonucleic acid synthesis. _Nature_, 211,

1043–1047. Article  CAS  Google Scholar  * Henderson, S A. 1970. The time and place of meiotic crossing-over. _Annual Review of Genetics_, 4, 295–324. Article  CAS  Google Scholar  * John,

B, and Lewis, K R. 1965. The meiotic system. _Protoplasmatologia_, 6, 1–335. Google Scholar  * Peacock, W J. 1968. Chiasmata and crossing-over:In _Replication and Recombination of Genetic

Material_, pp. 242–252, ed. W. J. Peacock. R. D. Brock, Austral. Acad. Sci. Canberra. Google Scholar  Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Department of Zoology,

Arizona State University, Tempe, 85281, Arizona Kathleen Church Authors * Kathleen Church View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND

PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Church, K. Meiosis in the grasshopper. _Heredity_ 32, 159–164 (1974). https://doi.org/10.1038/hdy.1974.19 Download

citation * Received: 06 March 1973 * Issue Date: 01 April 1974 * DOI: https://doi.org/10.1038/hdy.1974.19 SHARE THIS ARTICLE Anyone you share the following link with will be able to read

this content: Get shareable link Sorry, a shareable link is not currently available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing initiative