In animal breeding, genotype by environment interaction occurs when:
Correct answer: A. Animals rank differently across environments
- A. Animals rank differently across environments
- B. Genes change their DNA sequence in each environment
- C. Environmental variance becomes zero
- D. All animals show the same phenotype
Explanation
Genotype by environment interaction means genetic performance depends on the environment. A common indication is that animals or genotypes rank differently under different feeding, climate or management conditions.
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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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