What is the evolutionary significance of phenotype plasticity?
Many organisms have the ability to express different phenotypes in response to environmental conditions. Such phenotypic plasticity allows individual organisms to develop appropriate morphological, physiological, or behavioral traits that better fit a particular environment that they encounter.
How do phenotypes evolve?
Phenotypic evolution occurs primarily by mutation of genes that interact with one another in the developmental process. … Novel mutations may be incorporated into the genome by natural selection (elimination of preexisting genotypes) or by random processes such as genetic and genomic drift.
What are three ways to study the evolution of phenotypic plasticity?
The evolution of plasticity is modeled in three ways: optimality models, quantitative genetic models, and gametic models.
What affects phenotypic plasticity?
Phenotypic plasticity is a phenomenon in which a given genotype may develop different states of a character or group of characters in different environments (King et al. … Character variation within an individual species is typically more determined by environmental factors than by genotype differences.
Does phenotypic plasticity increase fitness?
Some genotypes, not genetically adapted to an environment, become adapted through phenotypic plasticity and thus increase their fitness. Here it is necessary to introduce the notion of an optimal phenotype for a given environment. This is the phenotype which leads to the best fitness within the population.
What is phenotypic plasticity quizlet?
What is phenotypic plasticity? The ability of a genotype to produce distinct phenotypes when exposed to different environments throughout its ontogeny.
How do genotypes determine phenotypes?
The term “phenotype” refers to the observable physical properties of an organism; these include the organism’s appearance, development, and behavior. An organism’s phenotype is determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences upon these genes.