A.Very very few traits have their variance explained only by the genetic variance,
B. even fewer are explained only by variance at a single locus and
C. yet even fewer have a locus that show a simple dominance / recessivity pattern.
- What does genetic variance mean in (A)? does it imply that environmental factors are at play
- So does (B) mean that mutliple genes affect traits?
- Does (C) mean that multiple alleles are at work as opposed to simply 2 alleles?
by the way, i'm not a science student, so explaining it in simple terms would be appreciated. thanks.