Polygeny

Some features of the universal tree of life based on rRNA polygenies have been confirmed, such as the division of the cellular living world into three domains.

Mendel thus recognised the possibility of polygenies.

However, the recent studies by Khan & Doworkers and Siegel (1977) have indicated that under a balance polygenic combination the ill effects of dw gene under egg type genome can be modified by introducing polygenies for egg production.