To make sure the two groups are similar in terms of age, IQ. and so on, the experimenter will assign people to either group A or B using a/an assignment procedure, such as a coin toss, where heads sends a subject to group A and tails sends a subject to group B.

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)

Traffic patterns refer to: how you move through a space hallways how rooms are connected to each other how rooms are organized

Which day care policy would you be interested in knowing if your work let you out late sometimes? a. pick up policy b. sick policy c. vacation policy d. punishment policy