Final answer:
A sequence of transformations in biology refers to the process of changing the genetic material of a cell. Examples include gene expression and genetic recombination.
Step-by-step explanation:
A sequence of transformations in biology refers to the process of changing the genetic material of a cell. It can occur naturally through processes like DNA replication or as a result of artificial genetic engineering techniques. One example of a sequence of transformations is the process of gene expression, which involves the conversion of DNA into RNA and then into protein. Another example is the process of genetic recombination, which involves the exchange of genetic material between homologous chromosomes during meiosis.