There is no evidence suggesting that epignathus caused by environmental agents, mendelian or polygenic inheritance
According to Peck and Peck (4) many observations have justified polygenic inheritance
theory, such as the increased prevalence of dental anomalies and significant differences in gender predilection.
3,4) Fingerprint patterns are of multifactorial polygenic inheritance
Very little is known about the polygenic inheritance
of skin colour.
2011) under especially polygenic inheritance
as was also pointed out by Lee et al.
Congenital abdominal hernia might be due to anatomical variation, polygenic inheritance
or infectious diseases (Tyagi and Singh, 2010).
However inheritance of some traits involves complex genetic phenomena such as co- dominance sex-linked genes and polygenic inheritance
refers to conditions determined exclusively by a large number of genes, each with a small effect, acting addictively (i.
Besides that due to polygenic inheritance
, these traits are highly affected by the environmental factors which cause difficulties in breeding for improvement of these characters (Yuan et al.
Researchers also verified that resistance to the pathogen in this population has polygenic inheritance
, is conditioned by both additive and dominance genetic effects, and that genotypes with high resistance were rare in the germplasm at that time.