152 Result(s)
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Article
The inheritance of colour in diploid potatoes
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Two independent loci are shown to be concerned with the development of certain anthocyanin pigments throughou...
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The inheritance oe colour in diploid potatoes II. A three-factor linkage group
o| li]1.|Three loci,B, I andF, concerned with the distribution of anthoeyanins in diploid cultivated potatoes, are identified. AllelesB d>B c>B ...
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Cytogenetic examination of 2,4 and 8 cell sheep eggs
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Article
Catecholamines induce metamorphosis in the hydrozoan Halocordyle disticha but not in Hydractinia echinata
Planula larvae of the marine hydroids Halocordyle disticha and Hydractinia echinata were treated with the catecholamines epinephrine, norepinephrine and dopamine, as well as with certain of their precursors and a...
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Codon usage divergence of homologous vertebrate genes and codon usage clock
This paper is concerned with the divergence of synonymous codon usage and its bias in three homologous genes within vertebrate species. Genetic distances among species are described in terms of synonymous codo...
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A comparison of the effects of estrus cow serum and fetal calf serum on in vitro nuclear maturation of bovine oocytes
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The phylogenetic position of taxaceae based on 18S rRNA sequences
The evolutionary position of the yew family, Taxaceae, has been very controversial. Some plant taxonomists strongly advocate excluding Taxaceae from the conifer order and raising its taxonomic status to a new ...
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Article
The phylogenetic positions of the conifer genera Amentotaxus, Phyllocladus, and Nageia inferred from 18s rRNA sequences
To determine the evolutionary positions of the conifer genera Amentotaxus, Phyllocladus, and Nageia, we obtained 18S rRNA sequences from 11 new taxa representing the major living orders and families of gymnosperm...
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Induction of metamorphosis with potassium ions requires development of competence and an anterior signalling centre in the ascidian Herdmania momus
Increased K+ concentration in seawater induces metamorphosis in the ascidian Herdmania momus. Larvae cultivated at 24°C exhibit highest rates of metamorphosis when treated with 40 mM KCl-elevated seawater at 21...
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Social Organization and Range Use in the Yunnan Snub-Nosed Monkey Rhinopithecus bieti
We studied social organization, behavior, and range use of the Yunnan snub-nosed monkey (Rhinopithecus bieti) at Wuyapiya (99°12′E, 28°30′N, the People's Republic of China) over 12 months between May 1992 and Ju...
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Inheritance and segregation of exogenous genes in transgenic cotton
Three transgenic cotton varieties (lines) were chosen for the study of inheritance and segregation of foreign Bt (Bacillus thuringiensis toxin) andtfdA genes in cotton. The transformed cotton varieties CCRI 30 an...
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Expansion of genome coding regions by acquisition of new genes
As it is the case for non-coding regions, the coding regions of organisms can be expanded or shrunk during evolutionary processes. However, the dynamics of coding regions are expected to be more correlated wit...
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Organization and Phylogenetic Analysis of κ-Bungarotoxin Genes from Bungarus Multicinctus (Taiwan Banded Krait)
Two genomic DNAs were isolated from the liver of Bungarus multicinctus (Taiwan banded krait) encoded κ1-bungarotoxin and κ3-bungarotoxin precursors, respectively. They shared virtually identical overall organizat...
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Origin of New Genes: Evidence from Experimental and Computational Analyses
Exon shuffling is an essential molecular mechanism for the formation of new genes. Many cases of exon shuffling have been reported in vertebrate genes. These discoveries revealed the importance of exon shuffli...
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Evolution of echinoderms may not have required modification of the ancestral deuterostome HOX gene cluster: first report of PG4 and PG5 Hox orthologues in echinoderms
Is the extreme derivation of the echinoderm body plan reflected in a derived echinoderm Hox genotype? Building on previous work, we exploited the sequence conservation of the homeobox to isolate putative ortho...
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Many Independent Origins of trans Splicing of a Plant Mitochondrial Group II Intron
We examined the cis- vs. trans-splicing status of the mitochondrial group II intron nad1i728 in 439 species (427 genera) of land plants, using both Southern hybridization results (for 416 species) and intron sequ...
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Open AccessGlobal nucleosome occupancy in yeast
Although eukaryotic genomes are generally thought to be entirely chromatin-associated, the activated PHO5 promoter in yeast is largely devoid of nucleosomes. We systematically evaluated nucleosome occupancy in ye...
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Many Independent Origins of trans Splicing of a Plant Mitochondrial Group II Intron
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Phylogeny of Prokaryotes and Chloroplasts Revealed by a Simple Composition Approach on All Protein Sequences from Complete Genomes Without Sequence Alignment
The complete genomes of living organisms have provided much information on their phylogenetic relationships. Similarly, the complete genomes of chloroplasts have helped to resolve the evolution of this organel...
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Network security and data integrity in academia: an assessment and a proposal for large-scale archiving