In humans, the "A" allele codes for Type A blood, the "B" allele codes for Type B blood, and the "o" allele codes for Type O blood. "A" and "B" are both dominant to "o." A and B are co-dominant to each other. What is the probability of a Type AB parent and a Type O parent producing a Type AB child?

A. 50%
B. 25%
C. 0%
D. 100%​

the fossil record provides evidence of a common ancestor to many species.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.