巻号一覧
53 巻, 5 号
選択された号の論文の10件中1～10を表示しています
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II. GEOGRAPHIC CLINE OBSERVED IN NATURAL POPULATIONSTAKESHI AGATSUMA, TAKUJI TAKEUCHI1978 年 53 巻 5 号 p. 317-325
発行日: 1978年
公開日: 2007/05/21
ジャーナル フリーLDH isozymes in the house fly were found to be highly polymorphic in natural populations of Japan. Of the five alleles observed, B1.60 was the predominant one in every population. From the frequency of 0.811 in the B1.60 allele in Hokkaido, the frequency declined gradually to 0.785 in Tohoku district and to 0.623 in other districts of southern Japan. The frequencies correlate positively with the latitude at which the samples were taken. The correlation between the allele frequency and the average temperatures was demonstrated. The data suggest a selective influence of temperatures on the relative frequencies of B1.60 in the polymorphic populations.抄録全体を表示PDF形式でダウンロード (1150K) -
WON HO LEE1978 年 53 巻 5 号 p. 327-337
発行日: 1978年
公開日: 2007/05/21
ジャーナル フリー1. Genetic variations of walking and flying ability of Drosophila melanogaster were examined by ‘connected-tube’ and ‘flight-tester’ apparatuses.
2. Males, on the average, walked faster and flied higher than females, and the correlation between sexes was significantly positive.
3. Walking abilities in four environments (Light and Shaked, Light and Rest, Dark and Rest, Dark and Shaked) correlated more or less positively with each other. The effect of shaking on the walking ability was different from the lighting conditions. Shaking generally activated the walking ability in the light but reduced in the dark.
4. Both walking and flying abilities have not correlated with each other or with other genetic traits such as viability, body weight and wing length.
5. Walking ability was controlled by additive polygenes whereas flying ability was controlled by mostly dominant genes.抄録全体を表示PDF形式でダウンロード (934K) -
WON HO LEE1978 年 53 巻 5 号 p. 339-344
発行日: 1978年
公開日: 2007/05/21
ジャーナル フリーThe effects of temperature on viability of hybrids between D. melanogaster females and D. simulans males were investigated using various strains of both species. The results obtained in these experiments were: (1) At 25°C, the interspecific hybrids varied from lethal (temperature sensitive) to fully viable (resistant). (2) The temperature sensitivity of the hybrid was mainly controlled by gene(s) located on the X chromosome of D. simulans male. (3) Temperature sensitivity varied among X chromosomes within natural populations of simulans, (4) The degree of hybrid temperature sensitivity can be modified by EMS treatment in both sensitive-to-resistant and resistant-to-sensitive directions. (5) Females of D. melanogaster also have effects on the hybrid temperature sensitivity, especially in the cross with temperature-sensitive simulans males. The Oregon-R strain was most sensitive melanogaster for detection of the hybrid temperature sensitivity.抄録全体を表示PDF形式でダウンロード (539K) -
RAVI PARKASH, KULBIR S. GILL1978 年 53 巻 5 号 p. 345-351
発行日: 1978年
公開日: 2007/05/21
ジャーナル フリーAcid phosphatase polymorphism has been analysed by starch gel electrophoresis in six Drosophila species and Zaprionus paravittiger. Acid phosphatase(s) are coded by a single autosomal gene, Acph-1, in all the species studied. This gene is represented by a single allele in D. jambulina, D. immigrans and Z. paravittiger; three alleles in D. punjabiensis; and four alleles in D. malerkotliana, D. takahashii and D. nepalensis. The alleles are expressed codominantly. In the polymorphic species a heterozygote reveals a hybrid band in addition to two parental bands, showing thereby that the enzyme is a dimer molecule. Thus, acid phosphatases reveal only allozymic variation in the local populations of different Drosophila species analysed.抄録全体を表示PDF形式でダウンロード (609K) -
ICHIZO NISHIYAMA, TOMOSABURO YABUNO1978 年 53 巻 5 号 p. 353-360
発行日: 1978年
公開日: 2007/05/21
ジャーナル フリーFatuoid aberrants may arise through whole or part deficiency of chromosome C9 which carries genes for the grain characters of cultivated oats and for meiotic synapsis. They are classified into three types by their particular chromosome constitutions and genetic segregation ratios (%) as follows: Het. Fatuoid Segregation 2n Configuration Normal Het. Hom. fatuoid Type I 42 20"+C9" 28:50:22 Type II 41 20"+C9' 3:45:52 Type III 41+fr 20"+C9C9S 28:54:18
Nullisomic hom. fatuoids of type II are asynaptic, dwarf and completely sterile. The long-arm (C9L) of chromosome C9 carries genes for the the cultivated type grain characteristics and its short-arm (C9S) bears a gene controlling synapsis.抄録全体を表示PDF形式でダウンロード (1100K) -
YOSHIHIKO FURUTA, KOZO NISHIKAWA, TOSHIHIDE HAJI1978 年 53 巻 5 号 p. 361-366
発行日: 1978年
公開日: 2007/05/21
ジャーナル フリーNuclear DNA content of 41 strains of Triticum monococcum was measured by Feulgen-cytophotometry using pollen tetrads. Strains analyzed in the present study were belonging to both cultivated form, ssp. monococcum (7 strains) and wild form, ssp. boeoticum (8 strains of aegilopoides type and 26 of thaoudar type) collected from whole range of its distribution.
Analysis of variance revealed remarkable uniformity of nuclear DNA content within this species, neither between cultivated and wild forms nor between two types of wild forms.抄録全体を表示PDF形式でダウンロード (561K) -
I. SEASONAL AND LOCAL VARIATIONSTAKESHI AGATSUMA, TAKUJI TAKEUCHI1978 年 53 巻 5 号 p. 367-370
発行日: 1978年
公開日: 2007/05/21
ジャーナル フリーPDF形式でダウンロード (316K) -
TAKIKO SHIMADA1978 年 53 巻 5 号 p. 371-374
発行日: 1978年
公開日: 2007/05/21
ジャーナル フリーPDF形式でダウンロード (998K) -
SABURO NAWA, MASA-AKI YAMADA, MITSUO TSUJITA1978 年 53 巻 5 号 p. 375-379
発行日: 1978年
公開日: 2007/05/21
ジャーナル フリーPDF形式でダウンロード (2314K) -
AKIRA KODAMA1978 年 53 巻 5 号 p. 381-384
発行日: 1978年
公開日: 2007/05/21
ジャーナル フリーIn root nodule cells of Sophora flavescens and Cytisus scoparius, normal mitoses were observed even in such cells that had been invaded by bacteria. Invading bacteria were found outside the spindle region in each mitotic stage. These seem to imply some type of boundary system in the spindle region which prevents the passage of the bacteria, and this, in turn, seems to prevent these bacteria from interfering with the normal mitotic chromosome movement.抄録全体を表示PDF形式でダウンロード (2210K)
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