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Genetical Research

Table of Contents - 1972 - Volume 19, Issue 02  

Research Article

The effect of an inverted chromosome segment on intragenic recombination in another chromosome of Sordaria brevicollis

A. F. Ahmada1 p1, D. J. Bonda1 p2 and H. L. K. Whitehousea1

a1 Botany School, University of Cambridge

Abstract

An inverted segment in one of the chromosomes of Sordaria brevicollis has been found to have a marked effect on recombination within a gene in another chromosome. There are two effects on the intragenic recombination pattern, namely, a change in the polarity of recombination and a change in the frequency of parental and recombinant outside markers. The results support the idea that a mechanism exists for cancelling crossovers shortly after they have been formed as a means of controlling their number.

(Received November 15 1971)

Correspondence:

p1 Present address: Institut für Allgemeine Mikrobiologie, Universität Bern.

p2 Present address: Department of Genetics, University of Edinburgh.

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