At each step up the hierarchy this relatedness becomes more obscure and individuals from different branches have fewer and fewer genes in common. Therefore when we compare two species from different genera within the same family, they do not look so much alike. Sexual reproduction that leads to genetic diversity. This implies that an individual has been 'selected' or 'chosen' based on some genetically controlled characteristic. All living things are the result of natural selection that has been going on since the beginning of life on the planet.
Human selection is relatively recent and has resulted in our cultivated plants and domestic animals.
No matter how many are planted here, none will survive. Think of it as reaching for a dime in a pocket of change. If no dime is present then it is impossible to select one from that pocket. Of course we can add more change to our pocket and increase our chances of pulling out a dime, especially if we know we are adding a dime to the pocket. The answer is that it depends.