RATE OF DEVELOPMENT OF VIABILITY MUTANTS IN<i>DROSOPHILA MELANOGASTER</i>

Bonnier, Gert; Jonsson, Ulla B.

doi:10.1111/j.1558-5646.1957.tb02895.x

Cited by 9 publications

(5 citation statements)

References 6 publications

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“…From experience we knew (BONNIER 1956) that detrimental genes inay cause a retardation of the development and it was thought that perhaps the rate of development should be different in the different populations. However, no such results were found; in fact we could confirm another experience of ours (BONNIER and JONSSON, 1957) : that the rate of development is extremely sensitive to temperature. If one wishes to iiiake a detailed study on developmental rates, observations at even short intervals, will not suffice if the development takes place in a n incubator room where temperature differences as large as * 1' C are possible.…”

Section: B Direct Tests On Population Individualscontrasting

confidence: 50%

“…Table 4 gives a summary of the accumulated doses at which these a mlyses were made. We have, as WALLACE, used the second chromosome and made the analyses according to the so-called Cy L-technique ( WAL- LACE, 1956: BONNIER, 1957. Thus a number of males from the different populations are individually crossed with virgin Cy L/Pm females.…”

Section: B Direct Tests On Population Individualsmentioning

confidence: 99%

See 1 more Smart Citation

Selection Pressure on Irradiated Populations of Drosophila Melanogaster

Bonnier¹,

Jonsson²,

Ramel³

2010

Hereditas

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Section: B Direct Tests On Population Individualscontrasting

confidence: 50%

Section: B Direct Tests On Population Individualsmentioning

confidence: 99%

Selection Pressure on Irradiated Populations of Drosophila Melanogaster

Bonnier¹,

Jonsson²,

Ramel³

2010

Hereditas

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“…Dobzhansky and Wallace (1953), and Lerner (1954) suggested that heterozygotes are more uniformly successful in a variety of environments than are homozygotes, while Lewontin (1957) generalized by suggesting that greater mean fitness over a number of environments will be generally associated with low variance in fitness. Negative correlations between mean viability (determined over a number of environments) and variability were found by Dobzhansky and Levene (1955), Bonnier and Jonsson (1957), and Spassky, Spassky, Pavlovsky, Krimbas, Krimbas, and Dobzhansky (1960).…”

Section: Discussionmentioning

confidence: 74%

THE ESTIMATION OF RELATIVE FITNESS OF DROSOPHILA POPULATIONS. II. EXPERIMENTAL EVALUATION OF FACTORS AFFECTING FITNESS

Barker

1963

Evolution

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“…And, as a matter of fact, several of our strainsthough showing in F 3 a percent of wild type flies larger than subvitals should do according to the definition of subvitalitywere non-normal in other respects. Among other things their rate of development had a larger variance than the ,truer normals (BONNIER and JONSSON 1957).…”

Section: 32 G E H T Bonnier a N D Ulla B Jonssonmentioning

confidence: 91%

“…(This strains is in Table 2 classified as subvital). With regard to both of these strains it was known that the wild type flies showed a retarded development (BONNIER and JONSSON 1957). Table 8 shows the result.…”

Section: Larval Competition Testsmentioning

confidence: 99%

Studies on X-Ray Induced Detrimentals in the Second Chromosome of Drosophila Melanogaster

Bonnier¹,

Jonsson²

2010

Hereditas

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HE great majority of experiments with Drosophila on radiation T induced mutations centers about questions of lethal mutations.Several investigations are, however, also made on mutations with less drastic effects, and it seems as if, during the last decade, the interest has switched over to mutations of this kind. The present investigation deals with different questions concerning x-ray induced subvitals in the second chromosome of D. melanogaster. The frequency of such mutations are considered and the comparisons made are in some instances also combined with the effects of different degrees of environmental stresses. MATERIALThe wild type flies used in the experiments were extracted from a Canton S stock. The flies were first made co-isogenic by making the crosses outlined in Fig. 1. As may be seen, (matings 1-5) the second chromosome al* Cy It" spa (abbreviated Cy) was used as marker and crossing over suppressor during the isogenisation. Later it was substituted by the chromosome al' Cy It" L' spa (abbreviated Cy L ; Fig. 1, mating 6 and onwards). The matings 1, 2, 3 and 4 were made in several replicates. In one of these the progeny of mating 4 was 26+, 53 Cy, 49 D 89 Cy D, which is in good agreement with the expected proportions 1: 2: 2: 4 (P between 0.7 and 0.8). The parents of mating 5 showed in this replicate good fertility; this replicate was, therefore, used as the foundation stock from which all ))wild type, chromosomes of the present study emanate. In a sideline the chromosomes al' Cy It" sps and ru h D8 Ins CXF ca (abbreviated Cy D) were retained on the male side

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RATE OF DEVELOPMENT OF VIABILITY MUTANTS INDROSOPHILA MELANOGASTER

Cited by 9 publications

References 6 publications

Selection Pressure on Irradiated Populations of Drosophila Melanogaster

Selection Pressure on Irradiated Populations of Drosophila Melanogaster

THE ESTIMATION OF RELATIVE FITNESS OF DROSOPHILA POPULATIONS. II. EXPERIMENTAL EVALUATION OF FACTORS AFFECTING FITNESS

Studies on X-Ray Induced Detrimentals in the Second Chromosome of Drosophila Melanogaster

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