David has been winning regional competitions as a video game dance champion. the physical activity is great for him and he has a lot of fun dancing, but a few of his friends have made fun of him for competing. what should he do?

What is the best approach to selecting safety equipment for an activity

Which of the following statements is true caffeine speed up the time it takes to the liver to break down and call taking a shower speed the time it takes to live in a bag and i’ll call

Spherocytosis is an inherited blood disease in which the erythrocytes (red blood cells) are spherical instead of biconcave. this condition is inherited in a dominant fashion, with sph- dominant to sph+. in people with spherocytosis, the spleen "reads" the spherical red blood cells as defective, and it removes them from the bloodstream, leading to anemia. the spleen in different people removes the spherical erythrocytes with different efficiencies. some people with spherical erythrocytes suffer severe anemia and some mild anemia, yet others have spleens that function so poorly there are no symptoms of anemia at all. when 2400 people with the genotype sph- sph+ were examined, it was found that 2250 had anemia of varying severity, but 150 had no symptoms. does this description of people with spherocytosis represent incomplete penetrance, variable expressivity, or both? explain your answer. (3 points)