Option 4 – Selective Breeding

Selective breeding is the process of breeding plants and animals for particular genetic traits. This is accomplished by selecting plants found to be aesthetically desirable, by controlling the mating of selected individuals. Such processes, repeated over many generations, can change the hereditary makeup and value of a plant.

Incorrect Options

Option 1 – Differentiation: In biological terms, differentiation refers to cellular differentiation. Cells are organized into tissues, which perform specific physiological function. Differentiation is a process in which a less specialized becomes more specialized cell.

Option 2 – Cloning: Cloning in biology is the process of producing populations of genetically-identical individuals that occurs in nature when organisms such as bacteria, insects or plants reproduce asexually.

Option 3 – Gene insertion: In genetics, an insertion (an insertion mutation) is the addition of one or more nucleotide base pairs into a DNA sequence.