Explanation:
Some people take issue with selective breeding because it is an approach that has enabled breeders to produce factory-raised broiler chickens with unnaturally high growth rates and finished size—chickens that can even have difficulty supporting their own weight. It’s important to understand that this isn’t the only use of (or misuse, as some might say) of selective breeding.
Humans have selectively bred plants and animals for thousands of years including:
crop plants with better yields
ornamental plants with particular flower shapes and colours
farm animals that produce more, better quality meat or wool
dogs with particular physiques and temperaments, suited to do jobs like herd sheep or collect pheasants.
Selective breeding aims to adapt an organism’s characteristics in a way that is dAn organism’s characteristics are partly determined by the combination of gene variants? that are passed on from one generation to the next. For example, the children of tall parents may themselves be tall if they inherit a combination of ‘tall’ gene variants.
We can take advantage of this to selectively breed animals or plants, choosing parents with particular characteristics to produce offspring that have those characteristics.
For example, if we breed tall parents together and exclude shorter parents, the offspring should inherit “tall” gene variants that make them tall.
Some of the offspring may even be taller than both of their parents, because they may inherit a combination of different “tall” gene variants from each parent and together these make the offspring taller.
With repeated selective breeding over multiple generations this population will get taller and taller.esirable to the humans that breed them.
