Question

Sickle cell anemia is known to run in a family. A pedigree chart for this family is shown below.

What percentage of the offspring are carriers of the disease but do not have it?

0%

25%

50%

100%

Answer 1

50%

Step-by-step explanation:

In pedegree charts,

a square stands for a male

a circle, female

black part: phenotype expressed

half filled: heterozygous aka carriers

So according to the pedigree diagram, 50% are heterozygous, or carriers, of sickle cell anemia.

Answer 2

i believe if both parents have sickle cell anemia there will be a 25% chance, or 1 in 4 chance that their offspring will have it as well.