TRIHYBRID CROSS

TRIHYBRID CROSS

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.


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