Agricultural Genetics
Agricultural Science · 50 practice questions
Mendel's first and second laws; cell division; terminologies (locus, alleles, genotype, dominance); methods of crop improvement (introduction, selection, crossing, quarantine); methods of animal improvement (introduction, breeding systems — inbreeding, line-breeding, cross-breeding, artificial insemination, quarantine, selection).
- Apply Mendel's laws to genetics and differentiate types of cell division.
- Determine outcomes of genetic crossing and compute simple probability ratios.
- Distinguish methods of crop and animal improvement and their advantages/disadvantages.
Try a few questions
- Practice question 1
Maintaining genetic diversity within a breeding population is mainly important because it
- A.provides the raw material needed to select for future desirable traits and resilience
- B.guarantees that no further genetic improvement will ever be needed
- C.eliminates the need for any future selection or breeding programme
- D.has no bearing on a population's ability to adapt to change
Show the answer
A. provides the raw material needed to select for future desirable traits and resilience
A diverse gene pool gives breeders more options and supports long-term adaptability.
- Practice question 2
Inbreeding, in animal or plant breeding, mainly refers to
- A.the mating of completely unrelated individuals from different populations
- B.the prevention of any mating within a population
- C.the mating of closely related individuals
- D.the artificial alteration of an organism's genes
Show the answer
C. the mating of closely related individuals
Inbreeding specifically involves breeding among close relatives.
- Practice question 3
In a dihybrid cross between two heterozygous parents (AaBb x AaBb), the expected phenotype ratio in the offspring is mainly
- A.3:1
- B.1:2:1
- C.1:1:1:1
- D.9:3:3:1
Show the answer
D. 9:3:3:1
A classic dihybrid cross of two independently assorting traits yields the 9:3:3:1 ratio.
More UTME Agricultural Science topics
- Factors of Agricultural Production
- Farm Surveying and Farmstead Planning
- Forms and Classification of Major Farm Animals in West Africa
- Meaning and Scope of Agriculture
- Rocks and Soil Formation
- Basic Economic Principles
- General Terminologies in Animal Production
- Importance of Agriculture
- Simple Farm Tools
- Soil Water and Soil Conservation
- Agricultural Ecology
- Anatomy and Physiology of Farm Animals
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