Biology for IGCSE & O level - Inheritance (Section 6 - No. 38)
What are the possible phenotypes resulting from a cross between a homozygous dominant and a heterozygous individual, assuming complete dominance?
Only the dominant phenotype.
Only the recessive phenotype.
Both dominant and recessive phenotypes in a 1:1 ratio.
Both dominant and recessive phenotypes in a 3:1 ratio.
Explanation
All offspring will express the dominant phenotype.