Studies Scientific & Social, By Alfred Russel Wallace .. 1
Studies Scientific & Social, By Alfred Russel Wallace .. 1
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Mr. Francis Galton made ^ This aspect.of the question is discussed in a later chapter.
316 STUDIES, SCIENTIFIC AND SOCIAL some experiments which led him to doubt the correctness of Darwin's main contention — that minute gemmules from every cell in the animal body were collected in each of the germ and sperm cells, and thus led to the repro- duction of a similar body. He transfused large quantities of blood from black to white rabbits, and vice versa, with- out in any way injuring them; and afte...r this infusion of blood from a very distinct variety, sometimes to the extent of one-third of its whole amount, each kind bred as true as before, showing no signs whatever of intermixture.
He then developed a new theory of heredity, which appeared to him more in accordance with facts, and an essential part of this theory was that the germinal material passes direct from parent to offspring, instead of being produced afresh from the various parts of the body ; and, as a consequence, changes produced in the body by external agencies during its life will not be transmitted to the offspring.
What to read after Studies Scientific & Social, By Alfred Russel Wallace .. 1?
You can find similar books in the "Read Also" column, or choose other free books by Wallace, Alfred Russel, 1823-1913 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Mr. Francis Galton made ^ This aspect.of the question is discussed in a later chapter.
316 STUDIES, SCIENTIFIC AND SOCIAL some experiments which led him to doubt the correctness of Darwin's main contention — that minute gemmules from every cell in the animal body were collected in each of the germ and sperm cells, and thus led to the repro- duction of a similar body. He transfused large quantities of blood from black to white rabbits, and vice versa, with- out in any way injuring them; and afte...r this infusion of blood from a very distinct variety, sometimes to the extent of one-third of its whole amount, each kind bred as true as before, showing no signs whatever of intermixture.
He then developed a new theory of heredity, which appeared to him more in accordance with facts, and an essential part of this theory was that the germinal material passes direct from parent to offspring, instead of being produced afresh from the various parts of the body ; and, as a consequence, changes produced in the body by external agencies during its life will not be transmitted to the offspring.
What to read after Studies Scientific & Social, By Alfred Russel Wallace .. 1?
You can find similar books in the "Read Also" column, or choose other free books by Wallace, Alfred Russel, 1823-1913 to read onlineMoreLess
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