Respuesta :

SE4SON
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.

Answer:

50%

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.