Question

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 labeled 1 next to a half-shaded square labeled 2. 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 labeled 1, half-shaded circle labeled 2, another half-shaded circle labeled 3, and a completely shaded square are shown labeled 4. All of these are also connected by a horizontal straight line. What best describes offspring 4? A female carrier of the disease A female having the disease A male carrier of the disease A male having the disease

Answer 1

Hey there!

I am certain the the answer would be, "A male having the disease".

I hope this helps!

Have a wonderful day!

Answer 2

Hello!! Sickle cell anemia is genetic that can be passed down by the parents carrying the gene, like this diagram. Your best answer would be “A male having the disease” because whenever the parents have children, a male will be completely normal, have two girls who carry the gene, and the male who has the disease. Whenever things are half shaded, it means that they are carrying the gene. Whenever things are not shaded at all means that they do not carry the gene. Whereas, when the fourth box is completely shaded, it means that they have the disease/trait. I hope this helps!! Have a great day!!