. Advanced biology. Biology; Physiology; Reproduction. Very similar twin girls. frightened by a fire. If the birthmark has hair growing on it, the explanation given is that a mouse frightened the mother before the child was born. Structural changes cannot be produced in a child by mater- nal impressions or mental ex- periences of the mother. The physiological explanation of birthmarks is that a number of small blood vessels of the skin of a new-born infant have remained dilated in a particular spot. This is a somatic, not a germinal variation. The characters com- bined in the chromosomes durin
. Advanced biology. Biology; Physiology; Reproduction. Very similar twin girls. frightened by a fire. If the birthmark has hair growing on it, the explanation given is that a mouse frightened the mother before the child was born. Structural changes cannot be produced in a child by mater- nal impressions or mental ex- periences of the mother. The physiological explanation of birthmarks is that a number of small blood vessels of the skin of a new-born infant have remained dilated in a particular spot. This is a somatic, not a germinal variation. The characters com- bined in the chromosomes during the union of the sperm and egg are the characters that will de- velop in the child. If musical ability is in one of the genes, it will be pres- ent in that of the off- spring. If not, no amount of practice on the part of the parent will develop the talent. The only struc- tural changes made in the /ntngcMdn^ offspriug are those that A recent photograph of the same identical twins. It is i fl? + J U A very difficult to distinguish one from the other. Can be aiteCtea by gOOU. 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 Wheat, Frank Merrill; Fitzpatrick, Elizabeth T. New York ; Boston [etc. ] : American Book Company
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Keywords: ., bookcentury1900, bookdecade1920, booksubje, booksubjectphysiology
