نتایج جستجو برای: heteroduplex
تعداد نتایج: 1227 فیلتر نتایج به سال:
I N the 1940s and 50s, the apparent lack of reciprocality in the production of bacteriophage recombinants led to the ascendancy of copychoice schemes for recombination in those little creatures (STURTEVANT, cited in HERSHEY and ROTMAN 1949). The subsequent descrip tion of gene conversion (non-4:4 meiotic segregation) in Neurospora (MITCHELL 1955a,b) was viewed by some as an illustration of the ...
Heteroduplex mobility assay, single-stranded conformation polymorphism and nucleotide sequencing were utilised to genotype human parvovirus B19 samples from Brazil and Paraguay. Ninety-seven serum samples were collected from individuals presenting with abortion or erythema infectiosum, arthropathies, severe anaemia and transient aplastic crisis; two additional skin samples were collected by bio...
Under conditions favoring single-strand transformation, the two complementary strands of Bacillus subtilis DNA, separated by differential complexing with polyriboguanylic acid, have identical transforming activity. Moreover separated single strands, upon renaturation with unmarked (recipient) DNA, form heteroduplex molecules with similar double-strand transformin activity. These findings bear u...
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