Journal ArticleDOI
Feulgen microspectrophotometric estimation of nuclear DNA of species and varieties of three different genera of Marantaceae
Archana Sharma,Sandip Mukhopadhyay +1 more
- Vol. 93, Iss: 3, pp 337-347
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TLDR
The variation in 4C DNA amounts between the species of Calathea was not distinct but in two species of Maranta, a notable variation in nuclear DNA amount was recorded and the amount of nuclear DNA did not show direct correlation with the total chromosome length and volume.Abstract:
Karyological analysis including determination of somatic chromosome number, total chromosome length, volume and karyotype formula andin situ estimation of 4C-nuclear DNA amount were carried out on 14 different species and varieties of the generaCalathea, Maranta andStromanthe. The 4C nuclear DNA amount was estimated through Feulgen microspectrophotometry following single wavelength method and expressed in arbitrary units of relative absorbances. The variation in 4C DNA amounts between the species ofCalathea was not distinct but in two species ofMaranta, a notable variation in nuclear DNA amount was recorded. In addition, the amount of nuclear DNA did not show direct correlation with the total chromosome length and volume. The absence of wide difference in nuclear DNA content at an interspecific level might have some adaptive value.read more
Citations
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Genome Analysis and Variation of 4c DNA Content in the Subtribe Carinae
TL;DR: Critical analysis of chromosome morphology revealed the structural alteration of chromosomes along with their changed DNA amount suggesting the compromise between the structural and biochemical changes of the genome during macro- and micro-evolution.
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Studies on Nuclear DNA and Meiotic Chromosomes in 8 Species on Mammillaria
TL;DR: Meiotic studies of Pollen Mother Cell (PMCs) and 4C DNA content from root tip cells of 8 species of Mammillaria of the family Cactaceae revealed significant interspecific variations in the genome, leading to genetic drift among the species.
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Chromosome and Marker-Based Genome Analysis of Different Species of Asparagus
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Evaluation of rapid molecular diagnostics for differentiating medicinal Kaempferia species from its adulterants
TL;DR: Eight barcoding loci were used to develop “fingerprints” for four Ka Kempferia species and two species frequently mistaken for Kaempferia, and the combination of matK, rbcL, and trnH-psbA proved to be the ideal locus for discriminating the Kaempfia species from their adulterants.
References
More filters
Journal ArticleDOI
Selfish genes, the phenotype paradigm and genome evolution.
W. F. Doolittle,Carmen Sapienza +1 more
TL;DR: Natural selection operating within genomes will inevitably result in the appearance of DNAs with no phenotypic expression whose only ‘function’ is survival within genomes.
Journal ArticleDOI
The structure of eight distinct cloned human leukocyte interferon cDNAs.
David V. Goeddel,David W. Leung,Thomas J. Dull,Mitchell Gross,Richard M. Lawn,Russell McCandliss,Peter H. Seeburg,Axel Ullrich,Elizabeth Mcleod Yelverton,Patrick W. Gray +9 more
TL;DR: Eight classes of human leukocyte interferon cDNA clones have been identified in a cDNA library prepared from a myeloblastoid cell line and nucleotide sequences demonstrate that the multiple human LeIFN genes code for a family of homologous, yet distinct proteins.
Journal ArticleDOI
DNA endoreduplication and polyteny understood as evolutionary strategies
TL;DR: A relationship between the basic nuclear DNA content and the occurrence and degree of endopolyploidy is reported and strongly suggests that DNA endoreduplication can be regarded as an evolutionary alternative to the high nuclearDNA content that has been achieved in other species mainly by ‘saltatory replications’.
Journal ArticleDOI
Polymorphisms in the chromosomal locations of elements of the 412, copia and 297 dispersed repeated gene families in Drosophila.
TL;DR: The results indicate that 412, copia and 297 are capable of evolutionarily rapid transpositions to new chromosomal sites and are able to be passed on from D. melanogaster strains to individuals from the same laboratory stock.
Journal ArticleDOI
Evolution of DNA content in higher plants
TL;DR: A chronology of key events, events, and researchers’ observations that led to the establishment of the “six letters” structure of DNA in 1953 and its replacement by the four “letter T”s since then.