N studies of induced mutation it is particularly desirable to use well-conI trolled methods for the detection of mutations. MULLER’S introduction of the ClB method for detecting lethal mutations in Drosophila first opened this field of study and much work has been done with this organism in spite of the laborious technical procedures required. Microorganisms offered a simpler material for this ...

zebra fish were exposed to environmentally relevant concentration of pesticides and metals fora period of 14 days. the individual and the combined toxicity of pesticides and metals were studied. damage caused to the dna and induction of mutation in the gadd45β gene was investigated in this study. the present investigation revealed that exposure of zebra fish to pesticides and metals induced dna...

Background: Mutation in NPM1 gene has been reported to be the most common genetic mutation in de novo acute myeloid leukemia (AML). AML with NPM1 gene mutation usually presents with higher initial leukocyte and blast cell counts and negative CD34 expression. We aimed to investigate the difference of initial leukocyte counts, bone marrow blast cell counts and expression of CD34 among patients wi...

Analysis of large scale human genomic data has yielded unexplained mutations known to cause severe disease in healthy individuals. Here we report the unexpected recovery a rare dominant lethal mutation TPM1, sarcomeric actin-binding protein, 8 individuals with atrial septal defect (ASD) 5-generation pedigree. Mice TPM1 exhibited early embryonic lethality disrupted myofibril assembly and no hear...

Spontaneous, 2-aminopurine- and 5-bromouracil-induced mutations at six rII nonsense codons were studied in phage T4 strains possessing wild-type and mutant gene 43 alleles. The mutation pathways studied included interconversions and reversions of nonsense codons. The tsCB87 allele, which specifies an antimutator DNA polymerase, reduced base-analogue-induced mutation frequencies along all pathwa...

Genetic variation is essential for crop breeding. In classical plant breeding programme, generated by hybridization and selections are made from the resulting segregating generations. Induced mutagenesis can supplement or able to replace as a source of variability. Since, mutations bring about variation, they provide ultimate basis evolution new forms, varieties species. spontaneous have played...

The European Medicines Agency has expressed concern regarding (1) the potential for antisense oligonucleotide (ASO) therapeutics to induce sequence-specific mutation at genomic DNA and (2) the capability of ASO degradation products (nucleotide analogues) to incorporate into newly synthesized genomic DNA via DNA polymerase and cause mutation if base pairing occurs with reduced fidelity. Treating...

To investigate the role of the nucleosome during repair of DNA damage in yeast, we screened for histone H2B mutants that were sensitive to UV irradiation. We have isolated a new mutant, htb1-3, that shows preferential sensitivity to UV-C. There is no detectable difference in bulk chromatin structure or in the number of UV-induced cis-syn cyclobutane pyrimidine dimers (CPD) between HTB1 and htb1...