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An organism's phenotype results from two basic factors: the expression of an organism's genetic code, or its genotype, and the influence of environmental factors.
- What directly influences phenotype?
- What two major factors influence phenotypic variation among a population?
- What is phenotypic factor?
- What are two examples of a phenotype?
- What two things influence an individual's phenotype quizlet?
- What are the 3 types of phenotypes?
- What causes phenotypic variability?
- What causes phenotypic plasticity?
- What are the two main reasons for variation between organisms of the same species?
- What are the resulting phenotypes?
- How both environment and genetics contribute to phenotype?
- What is the environmental influence of a genotype on the phenotype?
- What is a phenotype a combined effect of?
- What is phenotypic expression?
- What is phenotypic distribution?
What directly influences phenotype?
The proteins are directly responsible for the phenotype of an organism.
What two major factors influence phenotypic variation among a population?
Phenotypic Variance: A Summary
In summary, the phenotypic differences among the individuals in a population can be attributed to both genetic and environmental sources.
What is phenotypic factor?
Phenotype refers to the physical and behavioural traits of the organism and genotype to its internal, genetic composition. ... The truth resides somewhere in between because environmental factors are also known to influence an individual's phenotype.
What are two examples of a phenotype?
Examples of phenotypes include height, wing length, and hair color. Phenotypes also include observable characteristics that can be measured in the laboratory, such as levels of hormones or blood cells.
What two things influence an individual's phenotype quizlet?
Genetic and environmental factors combine to influence phenotype.
What are the 3 types of phenotypes?
With one locus and additive effects we have three phenotypic classes: AA, Aa and aa.
What causes phenotypic variability?
Phenotypic variations may be caused by differences in long-term programming of gene function rather than variation in gene sequences per se, and studies of the basis for inter-individual phenotypic diversity should consider epigenetic variations in addition to genetic sequence polymorphisms.
What causes phenotypic plasticity?
Rather, phenotypic plasticity is a developmental process, and the reaction norms that we usually measure in the adult stage, or at reproductive maturity, are in fact the result of a positive feedback between environments and genes throughout the ontogeny of an organism (Schmalhausen, 1949; Smith-Gill, 1983; Pigliucci ...
What are the two main reasons for variation between organisms of the same species?
Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. Another source is gene flow, or the movement of genes between different groups of organisms. Finally, genetic variation can be a result of sexual reproduction, which leads to the creation of new combinations of genes.
What are the resulting phenotypes?
phenotype, all the observable characteristics of an organism that result from the interaction of its genotype (total genetic inheritance) with the environment. Examples of observable characteristics include behaviour, biochemical properties, colour, shape, and size.
How both environment and genetics contribute to phenotype?
Environmental conditions, such as temperature and availability of nutrients can affect phenotypes. For example, temperature affects coat color in Siamese cats. ... Height in humans is a complex phenotype influenced by many genes, but it is also influenced by nutrition.
What is the environmental influence of a genotype on the phenotype?
Environmental factors that play a role include how dry your mouth is or how recently you have eaten. The degree to which your phenotype is determined by your genotype is referred to as 'phenotypic plasticity'. If environmental factors have a strong influence, the phenotypic plasticity is high.
What is a phenotype a combined effect of?
The genotype describes the genetic configuration of an individual, whereas phenotype describes the combined effects of genetic makeup and surrounding environment on behaviour.
What is phenotypic expression?
Phenotypic expression is the result of a complex interplay between an organism's genes and its environment. During growth and development, organisms undergo a programmed series of phenotypic changes. ... The ability to vary phenotypic expression in response to environmental conditions is known as “phenotypic plasticity.”
What is phenotypic distribution?
The phenotypic distribution of a trait, as we have seen, is a function of the average differences between genotypes and of the variation between genotypically identical individuals. ... For a given genotype, each environment will result in a given phenotype (for the moment, ignoring developmental noise).
