An Autosomal Dominant Mutant in Tribolium castaneum with Recessive Lethal Effects

1962 ◽  
Vol 96 (888) ◽  
pp. 186-188 ◽  
Author(s):  
Eliot Krause ◽  
Doris Shideler ◽  
A. E. Bell
Keyword(s):  
Tribolium Castaneum ◽  
Autosomal Dominant ◽  
Lethal Effects ◽  
Recessive Lethal ◽  
Dominant Mutant

LINKAGE STUDIES IN TRIBOLIUM CASTANEUM. XI. THE MAP POSITION OF CHARCOAL, A PSEUDOALLELE OF BLACK

1978 ◽  
Vol 20 (1) ◽  
pp. 139-145 ◽  
Author(s):  
Eric Brown ◽  
Alexander Sokoloff
Keyword(s):  
Linkage Group ◽  
Tribolium Castaneum ◽  
Reciprocal Cross ◽  
Autosomal Dominant ◽  
Linkage Studies ◽  
Lethal Effects ◽  
Recessive Lethal ◽  
Reciprocal Crosses ◽  
Group Iii ◽  
Significant Difference

Charcoal, (Chr), an autosomal dominant with recessive lethal effects is located in linkage group III in Tribolium castaneum (Herbst). Its map position has been determined in respect to aureate (au), light ocular diaphragm (lod) and black (b). The distances between the various genes vary, depending on the sex of the cross. The Chr ++/+ lod au ♂ × +lod au/+lod au ♀ crosses give the following recombination values: au-lod = 22.19 ±.42%, Chr-lod = 20.03 ±.40% and Chr-au = 41.28 ±.49%. The reciprocal crosses give au-lod 28.08 ±.45%, Chr-lod = 17.67 ±.38% and Chr-au = 44.11 ±.50%. For the larger distances encompassed by the Chr-au region the recombination values in the two sexes were not significantly different. For the shorter distances the recombination values were significantly higher in the males than in the females in the au-lod region. They were not found to be significantly different in the Chr-lod region probably because of difficulty in identifying lod and non-lod beetles in the presence of Chr. Tests of allelism indicate that Chr and black b are pseudoalleles which recombine at a different rate in the two sexes. Chr +/+b ♂ × +b/+b ♀ gave 0.07% recombinants, while the reciprocal cross gave 0.014% recombinants, a significant difference. The data suggest that the order of the genes in this linkage group is Chr - b - lod - au.

Linkage of the reindeer and alate prothorax loci and sex differences in recombination frequency in linkage group IX of Tribolium castaneum

1985 ◽  
Vol 27 (3) ◽  
pp. 276-278
Author(s):  
Peter S. Dawson ◽  
Kelly L. Berends
Keyword(s):  
Sex Differences ◽  
Linkage Group ◽  
Tribolium Castaneum ◽  
Autosomal Dominant ◽  
Recombination Frequency ◽  
Flour Beetle ◽  
The Third ◽  
Dominant Mutant

Reindeer (Rd), an autosomal dominant mutant in the flour beetle, Tribolium castaneum, is located in linkage group IX. Recombination between Rd and alate prothorax occurs more frequently in males than in females. Linkage group IX appears to be the third linkage group for which recombination frequency is greater in males for one region and in females for another region of the chromosome.Key words: Tribolium, linkage.

Effect of Selection on Whaxy: An Autosomal Dominant Mutation in the Screw- Worm Fly with Recessive Lethal Effects

1965 ◽  
Vol 99 (904) ◽  
pp. 47-57
Author(s):  
Leo E. LaChance ◽  
D. E. Hopkins
Keyword(s):  
Autosomal Dominant ◽  
Dominant Mutation ◽  
Lethal Effects ◽  
Recessive Lethal

scholarly journals HIGH RATES OF OCCURRENCE OF SPONTANEOUS CHROMOSOME ABERRATIONS IN DROSOPHILA MELANOGASTER

Genetics ◽  
1976 ◽  
Vol 83 (2) ◽  
pp. 409-422
Author(s):  
Osamu Yamaguchi ◽  
Ricardo A Cardellino ◽  
Terumi Mukai
Keyword(s):  
Chromosome Aberrations ◽  
Gene Arrangement ◽  
Reciprocal Translocations ◽  
Lethal Effects ◽  
Recessive Lethal ◽  
The Third ◽  
Lethal Mutations ◽  
Pericentric Inversions ◽  
Break Points ◽  
Spontaneous Chromosome

ABSTRACT Spontaneous mutations were accumulated for 40 generations in 140 unrelated second chromosomes with the standard gene arrangement. These were extracted from the same population by using the marked inversion technique, and the following findings were obtained: (1) In 42 out of the 140 chromosome lines, chromosome aberrations were detected by examining the salivary gland chromosomes: 40 paracentric and 15 pericentric inversions, 2 reciprocal translocations between the second and the third chromosomes, and 6 transpositions. (2) In 63 out of the 90 originally lethal-free lines, recessive lethal mutations occurred. (3) There were only 3 lines that acquired chromosome aberrations (inversions) with no lethal effects in the homozygous condition. (4) In a comparison of these results with those of the (CH), (PQ), and (RT) chromosomes in which no chromosome aberrations occurred after accumulating mutations for 22058 chromosome·generations (Yamaguchi and Mukai 1974), it was concluded that some of these 140 chromosomes carried a kind of mutator. (5) The frequency of mutator-carrying chromosome lines was estimated to be 0.66 on the basis of the distribution of the break-points on the chromosome lines and the frequency of lines that acquired neither recessive lethal mutations nor chromosome aberrations. Thus, the average number of breaks per mutator-carrying chromosome was estimated to be about 0.19/generation. On the basis of these estimates, the nature of the mutator factor was discussed.

scholarly journals Effect of Gamma Radiation on Growth and Development of Rust Red Flour Beetle Tribolium Castaneum (Herbst.)

2009 ◽  
Vol 49 (3) ◽  
pp. 280-282 ◽  
Author(s):  
Shishir Tandon ◽  
Anuradha Singh ◽  
Sudha Kanaujia
Keyword(s):  
Gamma Radiation ◽  
Tribolium Castaneum ◽  
Growth And Development ◽  
Developmental Period ◽  
Red Flour Beetle ◽  
Radiation Doses ◽  
Lethal Effects ◽  
Pupal Period ◽  
Flour Beetle

Effect of Gamma Radiation on Growth and Development of Rust Red Flour BeetleTribolium Castaneum(Herbst.)Study on the sterilizing and lethal effects of Cobalt-60 gamma radiation on the larval and adult stages of rust red flour beetleTribolium castaneum(Herbst.) was done at 0, 10, 30, 50, 70, 100, 150, 300 and 500 gray (Gy). Irradiation severely affected pupal period, pupal formation and survivability of larvae and adults. The developmental period of the pest was found to increase along with the increase in the radiation doses. The irradiation at 70 Gy was found to cause complete sterility in the insect.

GENETICS AND PHYSIOLOGY OF THE XANTHOPHYLLOUS MUTANT OF THE TOMATO

1958 ◽  
Vol 36 (2) ◽  
pp. 251-267 ◽  
Author(s):  
L. Butler ◽  
L. O. Chang
Keyword(s):  
Light Intensity ◽  
Moment Method ◽  
Linear Trend ◽  
Lethal Effect ◽  
Lethal Effects ◽  
Green Is ◽  
Recessive Lethal ◽  
Early Seedling ◽  
Simple Product ◽  
Growing Conditions

Xanthophyllous is a dominant yellow-leafed mutant; the genotype Xa Xa is lethal in either the seed or the very early seedling stage, while the genotype Xa xa is viable but reacts differently to light intensity than does the normal xa xa plant. The 1: 2: 1 ratio is never realized because less than half the lethals appear as seedlings. The 2: 1 ratio is affected by germination so that under good conditions for germination a 2: 1 ratio is obtained, but under poor conditions the ratio may approach 1: 1. Maximum likelihood formulae are given for calculating linkage when one gene is a dominant with recessive lethal effects, and it is shown that the simple product moment method gives similar results for these data. Xa is in linkage group VII (chromosome 10), and its lethal effect disturbs the monogenic ratios of all genes in this group. The following crossover values between these genes and Xa are found: H 44.5%, pe 50%, t 35.5%, tv 31.7%, and ag 46.5%.Under standard growing conditions the pigment concentrations of xanthophyllous contrasted with green is: chlorophyll, 790 instead of 3240 μg./g.; xanthophyll, 54 instead of 211 μg./g.; and carotene, 60 instead of 130 μg./g. Both green and yellow plants, when grown under various intensities and spectral compositions of light, have different responses. Green plants make only limited response to changes in light intensity, whereas Xa xa plants become green and cannot be distinguished from xa xa plants. From 600 to 8000 ft-c. the Xa xa plants show a linear trend of decreasing pigment (increasing yellowness) with increasing light intensity. The hypothesis is advanced that Xa xa plants make as much pigment as do green ones, but a light-dependent reaction breaks down the pigments faster than they are being formed.

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