Question

inheritance patterns and probability
traits are controlled by genes, which exist in different forms called alleles. the
combination of alleles an organism has is its genotype, while the physical expression of
those alleles is the phenotype.

some alleles are dominant, meaning they mask the presence of a recessive allele.
others show incomplete dominance, where a blended phenotype occurs, or
codominance, where both alleles are fully expressed.

complete the matching:

• incomplete dominance → _______________
• codominance → _______________

Explanation:

1. For incomplete dominance, heterozygous individuals show a phenotype that is a blend of the two homozygous phenotypes, as neither allele is fully dominant over the other.
2. For codominance, both alleles in a heterozygous individual are fully and independently expressed in the phenotype, with no blending.

Answer:

• Incomplete dominance → A blended phenotype occurs
• Codominance → Both alleles are fully expressed