Terminology 1. Genetics: The branch of biology concerned with the study of heredity and variation 2. Eugenics: The application of principles of genetics for the improvement of human kind. 3. Gene pool: The sum total of all the alleles present in the breeding or reproductive members of a random mating population. 4. Gene frequency: The proportion of one allele relative to all the alleles of a gene in a Mendelian population. 5. Cytogenetics: Concerns with the study of various aspects of chromosomes and their effects on the development of characters of organisms 6. Genome: A complete set of chromosomes of a diploid species 7. The first artificial hybrids in plants were produced by Thomas Fairchild in 1717 when he crossed sweet William with carnation. 8. Euphenics: Deals with the control of hereditary diseases especially inborn errors of metabolism. 9. Epistasis: When one gene affects in any way the expression of another gene, the phenomenon is called epistasis. 10. Genomics: It refers to the study of the structure and function of entire genome of an organism. 11. Biodiversity: Refers to the total variability present within and among species of all living organisms and their habits 12. Acclimatization: Refers to adaptation or adjustment of an introduced variety to the new environment. 13. A -line: Means the male sterile parent used in crossing to develop a new hybrid seed. it is the male sterile line. 14. B -line: It is the fertile counter parent of the A line, it is also called the maintainer line. 15. R -line: It is an inbred line which when crossed with a male sterile strain, the resultant hybrid is male fertile. 16. In vitro: biochemical process taking place in a test tubes (in lab.) 8.5K views05:08
