Hermione and Ron are planning to have children. Hermione is a carrier of cystic
ID: 33883 • Letter: H
Question
Hermione and Ron are planning to have children. Hermione is a carrier of cystic fibrosis (CF) and Ron has CF. Ron is a carrier of sickle cell anemia (SCA) and Hermione is homozygous dominant for SCA. What will be the ratio of phenotypes that you would expect in their children (assuming both genes assort independently in meiosis)? A "healthy" phenotype means that the children have neither disease. Other phenotypes mentioned below are: only having CF, only having SCA, or having both CF and SCA.
I know C and D are wrong. Is my answer here correct? or is it A? I though A would be based on plants....
Explanation / Answer
Yes, your answer is correct.
2:1:1 (healthy: CF only: SCA only)