Genetic diversity is influenced by four events controlling evolution: mutation, genetic drift, gene flow, and natural selection. Your genes hold the basic instructions for your body to grow and function, but they are far from the only thing controlling your traits. Most traits are shaped both by a person's genes and by environmental factors. Environmental factors include everything outside of DNA that affects your traits.

The science of the effect of nutrition on genes is built on three strands: DNA replication, protein synthesis and function, and metabolism. Food affects gene expression either through its effect on transcription, or by causing a change in structure. Several studies have demonstrated that nutrients alter gene expression either through gene regulation, signal transduction, protein synthesis and function.

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Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal's genes are expressed, which ultimately affects the animal's phenotype. Fundamentally, heredity and environment work together in the development of a child. The role of the environment ideally starts with the birth of a child. The environment ideally begins with the birth of a child. The purpose of the environment can shape a child that is in contrast with his /her genetic traits. Science tells us that the interactions between genes and environment shape human development. Despite the misconception that genes are “set in stone,” research shows that early experiences can determine how genes are turned on and off and even whether some are expressed at all. Genes hold the basic instructions for your body to grow and function, but they are far from the only thing controlling your traits. Most traits are shaped both by a person's genes and by environmental factors. Environmental factors include everything outside of DNA that affects your traits. But there is a difference between both of them. The inborn qualities of a person are determined by heredity, but the environment determines the growth and development of an individual's mental and social features. Thus, heredity is concerned with the character of an individual and how their environment influences them. The main difference between genetic variation and environmental variation is that genetic variation is the variation of the genotype between two individuals within the same species whereas environmental variation is the dependence of the phenotype upon the environmental factors. Inherited traits are the traits you get from your parents through the genes they pass down to you, their offspring. Environmental traits are influenced by your environment. Genetic variations are caused by mutation and recombination occurring at the time of meiosis. Chemical or biological mutagens play an important role in inducing mutations. Random mating among organisms also affects genetic variation. Genetic diversity is influenced by four events controlling evolution: mutation, genetic drift, gene flow, and natural selection. Genetic variations are caused by mutation and recombination occurring at the time of meiosis. Chemical or biological mutagens play an important role in inducing mutations. Random mating among organisms also affects genetic variation.