Just before opening her parachute a skydiver of mass 50 kg reaches terminal velocity. calculate the force of air resistance

Terminal velocity is described as a velocity attained when an object which falls freely experiences 0 net force owing to gravitational force which is balanced by the resistance of the air. Hence, there is no acceleration thus, the velocity is constant. In order to attain terminal velocity by the skydiver, the weight of the skydiver must be equal to the resistance of the air hence we  have the equation below;

50 kg*9.8 m/s²= 490 Newton.

Summarily, the force or magnitude of the air resistance is 490 Newton

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

one would be wind another would be water density