- Messages
- 57
- Reaction score
- 7
- Points
- 8
May you please explain the portion in red?
phenotypic variation results from interaction of genotype and
environment / VP = VG + VE ;
environment may modify expression of gene(s) ; must be stated
e.g. for size / mass / height ;
because, food / nutrient / ion, missing or in short supply ; A malnutrition
named, food / nutrient / ion, (missing or in short supply) ;
environment may, trigger / switch on, gene ; must be stated
ref. low temperature and change in animal colour ;
ref. high temperature and, curled wing in Drosophila / gender in
crocodiles ;
ref. UV light and melanin production ;
ref. wavelength of light and, flowering / germination / fruit colour ;
other named trigger plus example ;
environment effect usually greater on polygenes / ora ;
environment may induce mutation affecting phenotype