a1 Department of Zoology, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JT
Using mice that were mosaics for both Xce and phosphoglycerate kinase (Pgk-1) alleles, we present further evidence that the parental source of the X chromosome may affect the probability of that X chromosome remaining active. The reciprocal cross differences in PGK-1 activity described here are intermediate between those published previously for other alleles of Xce.
(Received September 24 1990)
(Revised January 25 1991)
c1 Corresponding author.
p1 Current address: Duncan Guthrie Institute of Medical Genetics, Yorkhill Hospital, Yorkhill, Glasgow G38SJ.