South Carolina officials
have been plastering the state with sample questions on high-stakes
tests that students will begin taking next spring. Below are
examples for 10th graders, whose tests will be phased in
There are three alleles that determine blood type: A, B, and
O. The A and B alleles are both dominant over O, but neither is
dominant over the other. When A and B are both present in a
genotype, they are co-dominant. This is why there are four
different blood types: A, B, AB, and O.
Dan has type A blood. What is the probability that Dan and
Joy will have a child with type O blood?
There are 250 seniors in a class. Sixty percent have plans
to go to college. Of those with plans to go to college, 40
percent plan to go to a college out of state. How many
students plan to go to a South Carolina college?