Link to this slang definition. To link to this term in a web page or blog, insert the following. <a href=http://onlineslangdictionary.com/meaning-definition-of/trippy>trippy</a>. To link to this term in a wiki such as Wikipedia, insert the following. [http://onlineslangdictionary.com/meaning-definition-of/trippy trippy]
The two main sources of genetic variation are mutations and recombinations of genes as a result of sexual reproduction. A mutation is a permanent change in the DNA within a gene. Continue Reading. Some mutations, which affect all cells in an organism, are inherited from a parent.
Nature and nurture. Variation is the raw material of evolution. Natural selection and other mechanisms of evolution work on the variation within a population â so without variation, there would be no evolution. However, there are two possible sources of variation: the environment and genes â in other words, nature and nurture. To understand these two components, imagine a field of corn plants with varying heights.