The pressure decreases because there is less density meaning there are less atoms or molecules in a space. Gravity determines the density by pulling in more molecules towards â¦ the center of the Earth.
Therefore, about 85-90 percent of children with hereditary retinoblastoma develop multiple tumors that affect both eyes (bilateral disease). The remaining 10-15 percent of patients with hereditary retinoblastoma develop only a single eye tumor (unilateral disease).
Q: I'm worried that my husband and I may both be carriers for Tay-Sachs disease. What are the chances our baby could have it? A: The gene for Tay-Sachs disease (an incurable, life-threatening nervous system disorder) is found most often among men and women of Eastern European Jewish backgrounds.