The pairs of terms that are correctly matched based on the allele for feather color in the chicken is aa - genotype; red feathers - phenotype.
<h3>What is genotype?</h3>
Genotype refers to the part (DNA sequence) of the genetic makeup of an organism which determines a specific characteristic (phenotype) of that organism.
The phenotype is the appearance of an organism based on a multifactorial combination of genetic traits and environmental factors.
According to this question, in chickens, the allele for black feathers (A) is dominant over the allele for red feathers (a).
Since a is the allele for red feather, the pairs of terms that are correctly matched based on the allele for feather color in the chicken is aa - genotype; red feathers - phenotype.
Learn more about genotype at: brainly.com/question/12116830
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