ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1956.tb01367.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

摘要:

SummaryA total of 237 Malay children (119 girls and 118 boys) were tested with serial dilutions of phenyl‐thio‐urea for their taste threshold. The method used is similar to the first stage of the method described by Harris&Kalmus (1949).In general the frequency distribution of taste threshold in the Malay children is similar to distributions obtained in other races by various investigators; the distribution is bimodal indicating separate frequency distributions of non‐tasters and tasters. The distributions of taste threshold in the tasters between the two sexes are significantly different. Though previous workers have recorded that the girls are more sensitive than the boys, the taste threshold distributions in the Malay children seem to show that the girls are less sensitive than the boys.The percentages of non‐tasters among the Malay boys and other rams are compared. The percentage of non‐tasters among the Europeans is large and that among the Chinese and Africans is small. The percentage of non‐tasters among the Malay children is intermediate. These differences are

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1956.tb01368.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

摘要:

SummaryAn attempt has been made to outline the genetical demography of a geographically relatively isolated north Swedish population during 1900–50. The region, which is divided into three parishes, P, J and M, was characterized by high birth‐rates and low in‐migration rates. The main results were as follows:(1) The mean inbreeding coefficient was estimated at 0·002 for the total population and for the parishes P, J and M at 0·0008, 0·0024 and 0·0058 respectively.(2) The mean effective population size of the parishes P, J and M was estimated at about 650, 300 and 150 for the period 1900–50.(3) The analysis indicated that the population of the total area should not be regarded as one breeding unit but rather a minimum of 3.(4) The distribution of two well‐defined simple recessive morbid conditions was studied. Genetical spastic oligophrenia, an entity discovered in this population, occurred with an average frequency of 2·6 per 1000 births. The incidence in the most isolated parish, M, was significantly high as compared with P + J. Recessive deaf mutism occurred with a frequency of 1·3 per 1000, which is close to three times the average for Sweden. This difference, and the occurrence of a specific genetical defect in this population, may be interpreted as mainly due to random ge

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1956.tb01369.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1956.tb01370.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

摘要:

Book Reviewed in this article:Clinical Genetics.Letalfaktoren in ihrer Bedeutung für Erbpathologie and Genphysiologie der Entwicklung. (Lethal Factors in relation to the Pathology of Inherited Disease and Physiological Genetics.

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1956.tb01371.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY