Question

What is a dominant allele?

Answer 1

An allele that is always expressed when the allele is present

Answer 2

Answer:

1. Dominance (complete dominance) would be a case in which 1 allele is always dominant over the other(s).

Example: we could see this clearly when breeding to homozygous dominant organisms (offspring are always dominant).

Conclusion:

Option 4 (d) is correct.

Hope it helped,

BiologiaMagister