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?

Which question should you ask to evaluate the credibility of health information? a.) does the article contain illustrations? b.) is the information up to date? c.) is the information available online? d.) is the information written in the united states?

When studying heredity, what is the relationship of dna based and traits? super urgent !

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