Question

both of the alleles in a heterozygous individual contribute to the phenotype at the same time
diploid
codominance
heredity
genotype

Explanation:

We need to match the definition "both of the alleles in a heterozygous individual contribute to the phenotype at the same time" with the correct term. Let's analyze each option:

• Diploid: Refers to a cell or organism having two sets of chromosomes. Not related to allele contribution to phenotype.
• Codominance: By definition, in codominance, both alleles in a heterozygote are fully expressed and contribute to the phenotype simultaneously. This matches the given definition.
• Heredity: Is the passing of traits from parents to offspring. Not about allele expression in heterozygotes.
• Genotype: Is the genetic constitution of an individual. Not about how alleles contribute to phenotype.

Answer:

The correct option is the one labeled "codominance" (the second option from the top among the given choices).