What are the phenotypic variations in humans?
Phenotypic variation, then, is the variability in phenotypes that exists in a population. For example, people come in all shapes and sizes: height, weight, and body shape are phenotypes that vary. Hair, eye color, and the ability to roll your tongue are variable phenotypes, too.
Which traits in humans are phenotypic?
A phenotype is an individual’s observable traits, such as height, eye color, and blood type. The genetic contribution to the phenotype is called the genotype. Some traits are largely determined by the genotype, while other traits are largely determined by environmental factors.
What is an example of phenotypic?
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 factors influence phenotypic variation?
Two types of factors are recognized as contributing to the phenotypic variation in a population, genetic and environmental.
What are the sources of phenotypic variation?
The phenotypic variation in populations is the result of genetic variation and two nongenetic sources of variation, namely, environmentally induced variation (EIV) and stochastic developmental variation (SDV).
Why do humans have different phenotypes?
While human phenotypes may seem diverse, individuals actually differ by only 1 in every 1,000 base pairs and is primarily the result of inherited genetic differences. The trait is still the result of variance in genetic sequence between individuals as a result of inheritance from their parents.
How do you know that it is a phenotypic trait?
A phenotypic trait is an obvious, observable, and measurable trait; it is the expression of genes in an observable way. An example of a phenotypic trait is a specific hair color or eye colour. Underlying genes, which make up the genotype, determine the hair color, but the hair color observed is the phenotype.
What is an example of phenotypic plasticity in humans?
From a human health perspective, documented examples of plasticity most commonly include the results of exercise, training, and/or dieting on human morphology and physiology.
Why do people worldwide have different phenotypic attribute?
Genetic factors While human phenotypes may seem diverse, individuals actually differ by only 1 in every 1,000 base pairs and is primarily the result of inherited genetic differences.