Plant breeding
From our last we were to read about charles Darwin theory of evolution....
Charles Darwin (1809-1882), an English naturalist propounded a theory of "natural selcection" to explain the process of evolution. He had an opportunity in 1832 to join the "HMS Beagle" for a maping trip. Darwin came to the conclusion that animals and plants have arisen by a process of slow and gradual change over successive generations, this being brought about by Natural Selection.
In 1859, his book on "the origin of specie by means of natural selection" was published - the first theory of evolution to be supported by fully documented evidence (distribution, comparative anatomy, taxonomy, embryology, cell-biology, and palaeontology).
Darwin put foward applause hypothesis explaining the mechanism by which species have changed. As a naturalist, Darwin was enormously impressed with the exquisite way animals and plants are adapted to their environment. Darwin explain this by postulating that individuals of a specoes differ from each other in the degree to which they are suited to the environment. The poorly adapted ones argued Darwin perished, where as the well adapted ones, survived and hand-on their beneficial characteristics to their offspring. This is what is meant by natural Selection, nature as it were, selecting the fit from the unfit, and to Darwin it provided an explanation of the extinct forms seen so clearly in the fossil records....
Next class will be on "Plant Breeding as an art and Science"
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