Sickle cell anemia is known to run in a family. A pedigree chart for this family is shown below. The parents are shown at the top and from left to right appear as a half-shaded circle next to a half-shaded square. The two are connected by a straight line. Below the parent pair is a vertical straight line connecting to the next row of circles and squares which are the offspring. Starting from left an unshaded square, half-shaded circle, another half-shaded circle, and a completely shaded square are shown. All of these are also connected by a horizontal straight line. What percentage of the offspring are carriers of the disease but do not have it? Group of answer choices 0% 25% 50% 100%
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Sickle cell anemia is known to run in a family. A pedigree chart for this family is shown below. The...
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