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.

All offspring will express the dominant phenotype.