. The biology of the amphibia. Amphibians. 18 THE BIOLOGY OF THE AMPHIBIA with a needle (Bataillon, 1910). The second process makes possible the transmission of hereditary factors received from the male and may be considered in more detail. Eggs extracted from the ovaries of the frog before they have escaped into the body cavity cannot be fertilized. This seems due to the failure of such eggs to maturate. In this process two successive divisions of the egg result in the throwing off near the animal pole of two minute bodies which are actual daughter cells although very small and difficult to s
. The biology of the amphibia. Amphibians. 18 THE BIOLOGY OF THE AMPHIBIA with a needle (Bataillon, 1910). The second process makes possible the transmission of hereditary factors received from the male and may be considered in more detail. Eggs extracted from the ovaries of the frog before they have escaped into the body cavity cannot be fertilized. This seems due to the failure of such eggs to maturate. In this process two successive divisions of the egg result in the throwing off near the animal pole of two minute bodies which are actual daughter cells although very small and difficult to see. One of these divisions results in relegating to the small functionless daughter- cells half of the chromosomes. Hence the egg nucleus at the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Noble, Gladwyn Kingsley, 1894-1940. New York : McGraw-Hill
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Keywords: ., bookcentury1900, bookpublishernewyorkmcgr, booksubjectamphibians
