Question: In humans, a V-shaped hairline is dominant over a straight hairline. If one parent is homozygous for a V-shaped hairline ( HH ) while the other parent is homozygous for a straight hairline ( hh ), what is the probability that the offspring of these parents will have a straight hairline?

  Options: 
 A. 0%
 B. 50%
 C. 75%
 D. 100%
Answer: A