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Genetika. 1991 Oct;27(10):1714-21.

[Temperature control of the crossing-over frequency in Drosophila melanogaster. Effect of infra- and super-optimal shock temperatures in early ontogenesis on the recombination frequency].

[Article in Russian]

Abstract

Effect of temperature shock treatments (0 and 37 degrees C) in early ontogenesis on recombination frequency was studied in two strains of Drosophila X1 and X2. Recombination frequency under treatment with temperature of 0 degrees C and 37 degrees C (shock treatment), as well as at 14 degrees C and 29 degrees C nonshock treatment was found to be dependent on strain genotype, the chromosomal segments under consideration, developmental stage and the age of individuals analysed. Shock treatments usually increase recombination frequency, whereas nonshock treatments lead to unstable and variable recombination frequencies. A concept of ontogenic homeostasis of recombination has been introduced. It is assumed that the effect of temperature treatments on recombination frequency is indirect--i.e. physiologically mediated.

PMID:
1778450
[Indexed for MEDLINE]

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