This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics, Subject name: Medicine
Dominant trait expresses in:(1994) 
Select and explain. 
A. Homozygous state, B. Heterozygous state, C. Both homo and heterozygous state, D. Males only
B: Heterozygous state
Answer: B: Heterozygous state 
Explanation: Ans: bRef: Harrison, 16thed, p. 264