Pros and cons of a sex chromosome. (IMAGE) Tokyo Metropolitan University Caption Pros and cons of a sex chromosome. Advantages include a stable ratio between sexes independent of the environment, and a reduction in sexual conflict, as evidenced by this work. A possible disadvantage, however, is chromosomal degradation and the loss of genes over time. Credit Tokyo Metropolitan University Usage Restrictions Please give credit for use. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.