GUIDE TEST PAPER QUESTIONS AND
SOLUTIONS 2026
◉ What is the "equation" for phenotype
Answer: P=G+E
◉ What are qualitative traits
Answer: traits that are controlled by a few pairs of genes
phenotypes easily distinguished (hair color_
no economic relevance
◉ What are quantitative traits
Answer: controlled by hundreds and thousands of genes
most economically relevant traits
affected by enviornment
◉ What is the percentage of heritability for terminal traits
Answer: 30%
◉ What is breeding value
, Answer: the value of an animal as a genetic parent
◉ What is EBV
Answer: Estimated breeding value
the estimate of genotypic value an individual possesses
◉ What is Expected progeny difference
Answer: the advantage or disadvantage of an individuals offspring
over the progeny of an average animal
◉ What traits should we genetically select for
Answer: economically relevant traits
◉ What are the most economical cereal grains
Answer: corn, sorghum, wheat, barley, oats
◉ What are good quality protein sources
Answer: soybean meal, canola meal, oilseed based meals
◉ What is corn deficient in
Answer: lysine, tryptophan, theronine