Assume that a certain species with sex chromosomes R and S exists such that RR individuals develop as males and RS individuals develop as females. Which of the following mechanisms would most likely compensate for the potential imbalance of sex-chromosome gene products between males and females of this species?
Inactivation of one R chromosome in males
Doubling transcription from the S chromosome in females
Inactivation of the R chromosome in females
Doubling transcription from the R chromosomes in males