CIRCADIAN CLOCK - GENETIC-CHARACTERIZATION OF A SHORT-PERIOD MUTANT OF CHLAMYDOMONAS-REINHARDII

Abstract

The periods in wild type (25 h) and short period mutant (18 h) of C. reinhardii show substantial fluctuations. Due to the considerable difference between both period types of more than 6 h the frequency distributions of the period recordings obtained from both strains are sufficiently well separated. Crosses between both strains give rise to a progeny consisting olf the short and the wild type period. In about 30% of the zygotes one of the daughter strains does not show any rhythmicity and is called arhythmic. The role of arhythmicity in the genetic representations of short and wild type period is discussed.