How many nucleotide differences are there between the A and B genes?

The following RBC indices are obtained on a patient when calculated using results from manual methods:

MCV: 73 fL MCH: 24 pg MCHC: 33.4 g/dL When the stained blood film is evaluated, the RBCs are normocytic normochromic. What conclusion can be made from this information? a. The hematocrit is too low. b. The hemoglobin is too low. c. The red count is too high. d. It is impossible to come to any conclusion.

The recommended vertical angulation for exposing a mandibular incisor periapical radiograph using the bisecting technique is

A) -10 degrees. B) -15 degrees. C) -20 degrees. D) -5 degrees.