When an animal's genotype is associated with superior performance only under a particular feeding system, this is an example of:
Correct answer: D. Genotype by environment interaction
- A. Chromosome nondisjunction
- B. Complete dominance
- C. Random genetic drift
- D. Genotype by environment interaction
Explanation
Genotype by environment interaction occurs when genotypes respond differently across environments. A genotype that performs well under one feeding system but not another illustrates a change in relative performance caused by the environment.
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About Animal Breeding and Genetics
Covers genes, chromosomes, inheritance, genetic variation, mutations, heritability and quantitative traits in livestock. It also includes selection methods, breeding systems, inbreeding, crossbreeding, heterosis and evaluation of traits such as growth, milk yield, fertility and disease resistance.
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