Mutations can lead to variations in traits from "summary" of Human Biology by Cecie Starr,Beverly McMillan
Mutations, or changes in the DNA sequence, are a fundamental source of genetic variability in organisms. These changes can occur spontaneously or be induced by external factors such as radiation or certain chemicals. When a mutation happens in a gene that codes for a specific trait, it can result in a variation in that trait. Variations in traits can manifest in a variety of ways, from subtle differences in physical appearance to significant changes in physiological functions. For example, a mutation in a gene responsible for eye color can lead to variations in eye color ranging from blue to brown. Similarly, a mutation in a gene that controls the production of a certain protein can result in variations in traits such as enzyme activity or hormone levels. The impact of mutations on traits can be influenced by a variety of factor...
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