5. TRIHYBRID CROSS
In trihybrid cross yellow, round seed shaped and tall height plants with green, wrinkled seed shaped and dwarf plants were crossed by Mendel.
As we seen in the forked line diagram above, a trihybrid cross yields a phenotypic ratio of 27:9:9:9:3:3:3:1. This reflects the phenotypes generated by the 64 genotypic combinations resulting from 8 different male gametes fertilizing 8 different female gametes.
The importance of Mendel's work did not gain wide understanding and until the 1890s, after his death, when other scientists working on similar problems re-discovered his research. William Bateson, a proponent of Mendel's work, coined the word genetics in 1905 at the third international conference on Plant Hybridization in London.
- MENDEL'S LAW OF GENETICS
- REPRESENTATION OF MENDEL’S EXPERIMENTS
- FORKED-LINE METHOD
- TRIHYBRID CROSS
- EXTENSIONS AND MODIFICATIONS OF BASIC PRINCIPLES OF MENDEL LAW
- TEST CROSS AND THE BACKCROSS
- CHROMOSOMAL BASIS OF INHERITANCE
- EXTENSION OF MENDELIAN GENETICS
- LINKAGE MAPPING
- TETRAD ANALYSIS
- BACTERIAL GENETICS
- PEDIGREE ANALYSIS
- SEX INFLUENCE TRAIT
- SEX LIMITED TRAITS
- POLYGENIC INHERITANCE-MULTIPLE GENE INHERITANCE QUANTITATIVE INHERITANCE
- CHROMOSOMAL ABBERATIONS