In humans, normal skin pigmentation is influenced by a dominant gene (C), which allows pigmentation ...

In humans, normal skin pigmentation is influenced by a dominant gene (C), which allows pigmentation to develop.
  All individuals who are homozygous for the recessive allele (c) are unable to produce an enzyme needed for melanin
  formation and are therefore referred to as albino. Two normal parents produce an albino child. What are the chances that
  the next child will be an albino? What will be an ideal response?
 
 

Question 2

Which condition shows 100 percent penetrance?
  a. sickle cell disease
  b. cystic fibrosis
  c. polydactyly
  d. camptodactyly
  e. eye color