- antigenic variation
Any process involved in the biological strategy of changing antigenic determinants on the surface that are exposed to another organism's immune system.
- sex-chromosome dosage compensation
Compensating for the variation in the unpaired sex chromosome:autosome chromosome ratios between sexes by activation or inactivation of genes on one or both of the sex chromosomes.
- obsolete inactivation of paternal X chromosome
OBSOLETE. Compensating for the two-fold variation in X-chromosome:autosome ratios between sexes by a global inactivation of all, or most of, the genes specifically on the paternal X-chromosome in the XX sex.
- random inactivation of X chromosome
Compensating for the two-fold variation in X-chromosome:autosome ratios between sexes by a global inactivation of all, or most of, the genes on either the paternal or maternal X-chromosome in the XX sex.
- dosage compensation by inactivation of X chromosome
Compensating for the two-fold variation in X-chromosome:autosome ratios between sexes by heterochromatin formation leading to a global inactivation of all, or most of, the genes on one of the X-chromosomes in the XX sex.
- obsolete inactivation of X chromosome by DNA methylation
OBSOLETE. Compensating for the two-fold variation in X-chromosome:autosome ratios between sexes by a global inactivation of all, or most of, the genes on one of the X-chromosomes in the XX sex by a mechanism of DNA methylation.