The Japanese Journal of Genetics
Online ISSN : 1880-5787
Print ISSN : 0021-504X
ISSN-L : 0021-504X
ON THE MANIFESTATION BY GENOTYPES RESPONSIBLE FOR STATURE
TOSHIYUKI FURUSHO
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JOURNAL FREE ACCESS

1968 Volume 43 Issue 3 Pages 211-238

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Abstract

The author has analyzed data on the annual increase in stature of the same individual throughout the school years to observe the manifestation of genes controlling stature.
1. The correlation coefficient r'i•j between the height at maturation and at various ages during growth becomes gradually higher with the decreasing difference in age; but the variation of r'i•j-curve follows that of nth degree, and is not additive or of linear increase, for the correlation momentarily decreases with the onset of the adolescent spurt (Figs. 1 and 2). In all of the 9 samples, the corresponding r'i•j-curves show much the same tendency.
2. A strong negative correlation (r=-0.81--0.97) is seen between r'i•j and the national average of the growth of stature per year by age. And, the smallest r'i•j corresponds to the maximum period of the maximum growth rate.
3. The strong correlation is found in Yoshida's data (1944) between parent-child correlation of the stature of children by age and r'i•j (r=0.79-0.88). In Takiguchi's data (1945) also, a similar tendency is seen in r'i•j (Figs. 1 and 2) as for the correlation of stature between mature elder brothers and 15-19 year old younger brothers, but because of the absence of data on brothers younger than 14 years, it is not certain whether a perfect concordance may be found or not.
4. The variation in parent-child or intersib correlation is regarded as one of the factors that contributed to the difference of these values in past reports.
5. A negative correlation (ri•jp) is usually found between statures in growth period and yearly growth by age, during the most rapid period of growth: 10-13 in males and 9-12 years in females.
6. These facts suggest that the manifestation of genes controlling stature at the completion of growth differs with age (and sex), and that this manifestation is modified by other factors at spurt.
7. Compared at the same age, a strong and regular correlation may be found between cotwins, both identical and fraternal, and for all ages. Otuki's report (1956) of the parent-child correlation of stature compared at the same age also has presented no variation by age. Therefore, it is suggested that the pattern of the growth of stature is under the control of genes, and that these genes may be considered to be fairly independent of those controlling the stature at the completion of the stature.
8. For the study of the influences of consanguineous marriage or of radiation upon stature, a through observation throughout the whole growth period is desirable.

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© The Genetics Society of Japan
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