👉 Resistant, in biology and genetics, refers to a phenotype characterized by an inability of an organism to respond or adapt to changes in its environment. This resistance can be due to genetic mutations, environmental factors, or both. For example, if you have a gene that causes a mutation that makes your cell unable to grow in the presence of nutrients (such as glucose), then it would be considered resistant. However, if you have a gene that causes a mutation that makes your cells unable to respond to