What is genetic and environmental variation?
What is genetic and environmental variation?
Genetic variation – these are differences between individuals that are inherited from parents, such as the colour of your eyes, hair and skin. Environmental variation – these are differences between individuals that are not inherited but caused by the environment that the organism lives in, including scars and tattoos.
What are examples of genetic and environmental variation?
Examples. Genetic Variation: Coat colors of animals, skin color, hair color, the color of the eye, freckles, and dimples are the examples of genetic variations. Environmental Variation: Phenotypic differences in identical twins is an example of environmental variation.
What are 3 sources of genetic variation?
The genetic diversity has three different sources: mutation, recombination and immigration of genes. Mutation is the driving force of genetic variation and evolution.
What are some sources of environmental variation?
These forms of variation are caused by factors found in the environment. The most important of these factors include lifestyle (diet and exercise), temperature and water level. For plants, light levels could also be included.
What is meant by environmental variation examples?
the ability of an organism to alter greatly its PHENOTYPE depending upon environmental conditions. The phenomenon is seen most clearly in plants, perhaps because they are fixed in the ground. For example, a dandelion will produce an erect habit with long flower stalks if in a garden border with other plants.
What is environmental variance?
environmental variance The portion of phenotypic variance that is due to differences in the environments to which the individuals in a population have been exposed.
What are 2 main sources of genetic variation?
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 types of genetic variation?
Types of genetic variation
- Transition. interchange of the purine (Adenine/Guanine) or pyrimidine (Cytosine/Thymine) nucleic acids.
- Transversion. interchange of a purine and pyrimidine nucleic acid (Figure 4)
What are the 5 sources of genetic variation?
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism’s offspring).
What is genetic variation examples?
Genetic variation results in different forms, or alleles?, of genes. For example, if we look at eye colour, people with blue eyes have one allele of the gene for eye colour, whereas people with brown eyes will have a different allele of the gene.