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 the next row of circles and squares which are the offspring. Starting from the left an unshaded square, half-shaded circle, another half-shaded circle and a completely shaded square are shown. All these are also connected by a horizontal straight line. What percentage of the offspring have sickle cell anemia? 0% 25% 50% 100%

Question

Jermaine

2 August, 20:45

+3

Answers (2)

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Sofia Bonilla · Answer 1

Its 100% bc the entire box is shaded. normally shaded boxes are infected

Laddie · Answer 2

It'll be a 50% chance because it's a half and half chance for the half shaded circle offsprings.