460 Results
for term "sites"
- Identification of target genes regulated by homeotic proteins in Drosophila melanogaster through genetic selection of Ultrabithorax protein-binding sites in yeast....Copyright 0 1995 by the Genetics Society of America Identification of Target Genes Regulated by Homeotic Proteins in Drosophila melanogaster Through Genetic Selection of Ultrabithorax Protein-Binding Sites in Yeast Grant S. Mastick, '** Renee McKay, Thomas Oligino, Katya Donovan and A. Javier Lopez ~~~
- Molecular analysis of an allozyme cline: alcohol dehydrogenase in Drosophila melanogaster on the east coast of North America..... We found significant clinal differentiation at the polymorphism determining the mobility-difference causing amino acid replacement between Adh-F and Adh-S alleles. Hitchhiking was limited, despite extensive linkage disequilibrium, and other sites did not vary clinally. Such a pattern ~~~
- A new method of inference of ancestral nucleotide and amino acid sequences....the highest probability was the best reconstruction at the site. The lysozyme c se- quences of six mammals were analyzed by using the likelihood and parsimony methods. The new likelihood-based method was found to be superior to the parsimony method. The probability that the amino acids for all interior nodes ~~~
- An implanted recombination hot spot stimulates recombination and enhances sister chromatid cohesion of heterologous YACs during yeast meiosis....with each other and missegregate in 25% of meiosis I events. Recombination hot spots in the yeast Saccharomyces cerevisiae have previously been shown to be associated with sites of meiosis-induced double-strand breaks (DSBs) . A Gkb fragment containing a recombination hot spot/DSB site was implanted onto ~~~
- Population genetics of polymorphism and divergence..... Louis, Missouri 631 10 Manuscript received March 7 , 1992 Accepted for publication August 12, 1992 ABSTRACT Frequencies of mutant sites are modeled as a Poisson random field in two species that share a sufficiently recent common ancestor. The selective effect of the new alleles can be favorable, neutral ~~~
- A cladistic analysis of phenotypic associations with haplotypes inferred from restriction endonuclease mapping and DNA sequence data. III. Cladogram estimation....by restriction endonuclease mapping or DNA sequencing that are associated with significant phenotypic deviations. Our approach was limited to segments of DNA in which little recombination occurs. In such cases, a cladogram can be constructed from the restriction site or sequence data that represents ~~~
- Intragenic suppressors of folding defects in the P22 tailspike protein....for publication October 3, 1990 ABSTRACT Within the amino acid sequences of polypeptide chains little is known of the distribution of sites and sequences critical for directing chain folding and assembly. Temperature-sensitive folding (tsf) mutations identifying such sites have been previously isolated ~~~
- Splicing of retrotransposon insertions from transcripts of the Drosophila melanogaster vermilion gene in a revertant....a low level of mRNA from which most of the transposon sequences have been eliminated by splicing at cryptic sites within transposon sequences. Here, we demonstrate that a revertant of the v allele called v+37 is caused by the insertion of a second retrotransposon, the B104/ roo element, into a site ~~~
- Estimating substitution rates in ribosomal RNA genes....at nucleotide sites are assumed to follow gamma distributions that are different for the two types of regions. The simplest formulation of the model allows for explicit expressions for transition probabilities of the Markov processes to be found. These expressions were used to analyze several 16Slike rRNA genes ~~~
- Second-site revertants of Escherichia coli trp repressor mutants....Copyright 0 1988 by the Genetics Society of America Second-Site Revertants of Escherichia coli trp Repressor Mutants Lisa S. Klig, Dale L. Oxendes and Charles Yanofsky Department of Biological Sciences, Stanford Universig, Stanford, Calijiornia 94305-5020 Manuscript received March 1 1, 1988 ~~~