No. 537] HAIR FORM AMONG FILIPINOS 



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ance in the proportions may be due to the fact that when 

 the father has curly hair and the mother straight, the 

 curly hair is dominant, while at other times it acts as a 

 recessive. The fact that 46 families have 47 parents with 

 wavy or curly hair and 45 parents with straight hair, and 

 1 13 children with wavy or early hair and 1 1 li with >t raight 

 hair indicates that either the curved or the straight may 

 be dominant unless curly and wavy are separable forms, 

 in which ease, straight hair should he considered domi- 

 nant. There are, however, twice as many known straight- 

 haired grandparents as there are curly- and wavy haired 

 combined. Curly and wavy hair seem to have been latent 

 (recessive) in the grandparents, and predominance of 

 straight hair in the ancestry may make straight hair 

 dominant in heredity. 



Summary 



There can be no doubt that hair form Mends in hered- 

 ity 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 Menders laws, although there is a tend- 

 ency 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 hetero- 



pearing when the parents are wavy-haired. Wavy hair 

 is epistatic to curly and hypostatic to straight; it may 



hypostatic early or hypostatic wavy. There is evidence 



the fact that curly hair is usually recessive among the 

 Filipinos. 



In conclusion the results observed for Filipinos are 



