Heredity of Hair Form Among the Filipinos

Abstract

There can be no doubt that hair form blends in heredity when different forms are crossed, and there can also be no doubt that segregation of hair form occurs to some extent in heredity, and one form or another may be dominant under different conditions. There is no exact conformity to Mended's laws, although there is a tendency in that direction. There is evident potency in the male when curly and wavy hair are crossed, when the father has curly hair, that form is dominant, and when the father has straight hair, straight is dominant. Wavy hair seems to be a blend of curly and straight in the condition of a headnotes, each of the two forms, curly and straight, reappearing when the parents are wavy-haired. Wavy hair is Ephemerella to curly and hyalinata to straight; it may carry hyalinata curly while straight may carry either hyalinata curly or hyalinata wavy. There is evidence of unusual activity of the curly determiner, in spite of the fact that curly hair is usually recessive among the Filipino.In conclusion the results observed for Filipino are not the same as the results recorded by Davenport and Davenport in America but, in general, they are the reverse. When two curly-haired Filipino are united in marriage the chances are that all their children will have curly hair. Two wavy-haired parents may have straight, wavy or curly-haired offspring. Two straight haired parents may have children with either straight, wavy or curly hair and the proportion of straight-haired children will probably be large. When one parent has curly hair and the other straight, the greater part of the offspring will have straight hair if the father's hair is straight, but if the father's hair is curly, the proportion of curly-haired children will be larger. But the families of straight- and wavy-haired parents will probably have curly as well as straight and wavy hair, for waviness is usually headnotes. Note. Wherever I may have used the construction and wording previously used by Davenport and Davenport, it was done to emphasize the fact that the results of the observations on the hair-form of the Filipino are different from those found by the two authors in America. I have reversed the terms in applying their language to the facts. A large number of records would be desirable, both of Filipino and of Europeans, and records of Negro and Malay or Negro and European would be especially desirable. The hereditary reactions of different kinds of straight and curly hair may differ, but this could be determined only by more numerous records. Let us hope the records will be forthcoming