Science project idea on how plants and animals may be improved by selection.
Plants and Animals may be Improved by Selection- Science Project Idea
From the very earliest times selection has been a factor in producing better animals and plants.Selection has depended upon two facts with which we are all familiar: first, that no two plants or animals are exactly alike; and second, that a plant or animal tends to be like its parents.In a classroom, for example, there are no two pupils exactly alike.This is also true if we consider all the people in the whole world.Likewise, you will find that no two bean or wheat plants or apple trees or horses are exactly alike.This we call variation.
On the other hand, each pupil in the class resembles his parents or grandparents in many respects.It may be in the shape of the nose or face, coloring, tone of voice, size, mental traits, etc. The same is true of every plant and animal.Chickens never come from duck eggs, or chestnuts from cherry trees.Every plant or animal resembles its parents in hundreds of ways.This law of resemblance is called heredity; and we say that a person inherits a good disposition, black eyes, etc., from his antecedents.The farmer, who each year selects the best corn or wheat grains for seed, will keep his crops up to the highest grade.He may select for any special characteristic; size of ear, rapid growth, large or small amount of starch, protein, or oil.
Science Project Idea Pick a domesticated animal or plant and trace one feature that it has that wasn't there in the past when it wasn't domesticated.Show how this domesticated plant or animal how just on its one feature has been a benefit to humans or the environment.
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