MCQs Plant Breeding and Genetics-46 Posted on 2025-11-16Author admin 0 1. The opposite of inbreeding depression is __________. Linebreeding Hybrid sterility Hybrid vigor Genetic drift 2. Deleterious mutations are _______________ Always immediately expressed and eliminate the carrier The source of all evolutionary adaptation Harmful genetic variations that reduce an individual’s fitness Always dominant in their expression 3. The primary center of origin for Pearl millet is____________ South America China Southeast Asia Western Africa 4. Canola is primarily a member of the plant family __________ Brassicaceae Solanaceae Fabaceae Asteraceae 5. Inbreeding depression is primarily caused by __________ Gene flow Increased heterozygosity Overdominance Accumulation of deleterious recessive alleles 6. Legumes are a rich source of ________ Carbohydrates Healthy fats Plant-based fats Plant-based protein 7. Domesticated tobacco, Nicotiana tabacum has a diploid chromosome number of 2n = ________ 40 42 38 48 8. Linebreeding is a form of __________. Outbreeding Mutation breeding Controlled inbreeding to retain desirable traits Random mating 9. The first chemical mutagen was discovered by Auerbach & Robson in the year _________ 1916 1941 1935 1924 10. Dolly, the first mammal cloned from an adult somatic cell, was produced in _________ 1996 2000 1993 1990 Loading …
