Question

If a person who is a carrier for sickle cell anemia (Ss) mates with another carrier of the disease, what percentage of the offspring is likely to have the disease? 25%

Draw the Punnett Square

Answer 1

Explanation: so you have 2 parents both carry meaning they are both Ss, so draw your punnet square and put in Ss into the spots like in the picture, anytime you see Ss they are a carrier only when you see ss is when the child is effected/has sickle cell, and since there is only one ss out of the 4 boxes it makes it to where there is only a 25% chance of the child being effected or you can see it as 1/4 which equals .25 which is then 25%