摘要:

SUMMARYA large Dutch family stock withX‐chromosomal ocular albinism is recorded. The first generations have been formerly described by Engelhard as cases of hereditary nystagmus. This nystagmus was present indeed in all the males and in the only female person affected, but it proved to be a secondary one. The patients showed a kind of albinoidism of the tapetum, which was not quite devoid of pigment. It was combined with a hypoplasia of the fovea as in generalized albinism. The question is discussed whether this type of albinism is fully restricted to the eye or not. The mode of inheritance is an intermediate one. The female carriers are recognizable as heterozygotes by diascleral translucency of their irides and by irregular peripheral pigmentation of their fundi. The method of examination employed by the authors is described. Stress is laid upon the practical value of this research because it is now possible for daughters of transmitter females to obtain a scientifically justified prognosis for their eventual offsprin

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1971.tb00270.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

摘要:

SUMMARYAn analysis is made of the change in secondary sex ratio in humans as the ages of the parents increase, and also as the age of the mother and birth order increases. It is shown that both age of the father and birth order are significantly correlated with this change in sex ratio, whereas the age of the mother is not. The changes with increasing birth order and with increasing age of the father are so similar when properly compared, that they appear quite likely to be caused by the same underlying factor.

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1971.tb00271.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1971.tb00272.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

摘要:

SUMMARYABO, MNandRh‐Hrblood‐group frequencies in 200 Persian Jews are reported and compared with findings in other oriental Jewish communit

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1971.tb00273.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1971.tb00274.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

摘要:

SUMMARY1. Blood groupsOA1A2B, Rh,taste reaction to phenyl‐thio‐carbamide and colour blindness of the red‐green type have been investigated in six migrant endogamous groups in India. Data for blood groupMNhave been given for two of the six groups.2. Intra‐ and intergroup variations in these endogamous groups are analysed statistically.3. A comparative survey of some genetic traits between these migrant groups and the original community is given. Significance of the changes in gene frequencies in the estimation ofNis di

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1971.tb00275.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

摘要:

SUMMARYA family is reported in which there was crossing‐over between the gene for the Duchenne‐type muscular dystrophy and that for incomplete red‐green colour blindness. The crossing‐over percentage

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1971.tb00276.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1971.tb00277.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

摘要:

SUMMARYParent‐child correlations of approximately zero and sib‐sib correlations of approximately one‐half have beefi obtained in respect of the grade of seventy in the nail‐patella syndrome. The nail defect and the patellar size have been used as indices of severity.These findings are interpreted as evidence for the operation of a series of modifying genes at the nail‐patella locus itself and a possible method of confirming this interpretation is suggested in which use is made of the known linkage between this locus and the

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1971.tb00278.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY

ISSN:0003-4800    

DOI:10.1111/j.1469-1809.1971.tb00279.x

出版商:Blackwell Publishing Ltd    

年代:1956

数据来源: WILEY