Each of two pea plants has one tall gene (T) and one short gene (s). Any gene combination with a T results in a tall plant. The Punnett square shows the possible gene combinations of the offspring and the resulting plant heights. What percent of the possbile gene combinations result in tall palnts?

TT Ts
Ts ss
Your

Researchers are conducting experiments to determine the role of alcohol in the development of depression. after the study is complete, they determine that the relative risk of developing depression is 1.55 with a 95 % ci of 1.2 -1.9. each group is then divided into nonsmokers and smokers. the relative risk for the nonsmokers is 1.12 with a 95% ci of 0.87-1.37. the relative risk for the smokers is 1.7 with a 95 % cl of 1.5-1.9. what type of bias may affect this study? a. procedure bias b. recall bias c. selection bias d. confounding e. lead-time bias