Multiple choice

Which of the following is/are the outcome(s) of pleiotropy?

a. Increased resistance to falciparum malaria in sickle cell anemia b. Abnormal mucus production in cystic fibrosis c. Appearance of delicious apple and navel oranges

  1. only a

  2. only b

  3. a and b

  4. only c

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In both cases, i.e. falciparum resistance and abnormal mucus production, mutation in one gene results in more than one phenotypic trait. Thus, both are examples of pleiotropy.