Jon stated that he began consuming alcohol at the age of 19, but was drinking most heavily from ages 21-22 on the weekends. at that time he was drinking on weekends and was sometimes getting drunk. he reported that he does not really like the feeling that alcohol gives him, as it makes him impulsive and more easily angry. he reported occasionally drinking more than he planned and that drinking would make him feel hungover. jon’s symptoms warrant a diagnosis of alcohol use disorder.

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)

Does anyone know how to dissect a frog or baby squid?

Which of the following is a nonspecific defense against pathogens? - b cells - antibodies - t-cells - inflammation