A maternal effect is a situation where the phenotype of an organism is determined not only by the environment it experiences and its genotype, but also by the environment and genotype of its mother. In genetics, maternal effects occur when an organism shows the phenotype expected from the genotype of the mother, irrespective of its own genotype, often due to the mother supplying mRNA or proteins to the egg. Maternal effects can also be caused by the maternal environment independent of genotype, sometimes controlling the size, sex, or behaviour of the offspring. It has been proposed that maternal effects are important for the evolution of adaptive responses to environmental heterogeneity.
Read more about Maternal Effect: Maternal Effects in Genetics, Environmental Maternal Effects, Paternal Effect Genes
Famous quotes containing the words maternal and/or effect:
“Mothers have as powerful an influence over the welfare of future generations, as all other causes combined.”
—John Abbott. The Mother at Home; or the Principles of Maternal Duty, John Abbott, Crocker and Brewster (1833)
“Nothing could his enemies do but it rebounded to his infinite advantage,—that is, to the advantage of his cause.... No theatrical manager could have arranged things so wisely to give effect to his behavior and words. And who, think you, was the manager? Who placed the slave-woman and her child, whom he stooped to kiss for a symbol, between his prison and the gallows?”
—Henry David Thoreau (1817–1862)