Answer: B) The mother's father must also carry the recessive allele
Explanation:
How Are Men Affected by Cystic Fibrosis? Males account for slightly more than 50 percent of all cases of cystic fibrosis (CF) but generally have better outcomes than females until about age 20.
Answer:
it means proof of your a specific person
Explanation:
yes
B-valine,histidine,threonine,phenylalanine
