Before revision: Considering the situation for one gene or multiple genes causing individual differences in a particular phenotype (i.e., causing variation observed in the population for that phenotype), in homozygous females it doesn't particularly matter which copy of the chromosome is inactivated, as the alleles on both copies are the same.
After revision: Considering the situation for one gene or multiple genes causing individual differences in a particular phenotype (i.e., causing variation observed in the population for that phenotype), in homozygous females it does not particularly matter which copy of the chromosome is inactivated, as the alleles on both copies are the same.