In animal breeding, genomic selection primarily improves early prediction of breeding value by using:
Correct answer: D. Genome-wide DNA marker information
- A. The number of offspring per mating
- B. Only the animal's visible phenotype
- C. The average age of its herd
- D. Genome-wide DNA marker information
Explanation
Genomic selection uses many DNA markers distributed across the genome to predict breeding values before extensive performance or progeny records are available. Phenotype and pedigree data may still support the prediction but are not the defining information source.
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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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