pigeon breeder wants to apply artificial selection to develop pigeons with a specific body shape and feather pattern. For the breeder to be successful, what property must exist among the breeding stock of pigeons?

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.

can i pls have the choices?