A conjugation experiment is carried out between f+ his+ leu+ thr+ pro + bacteria and f his leu thrpro - bacteria for a period of 25 minutes. At this time the mating is stopped, and the genotypes of the recipient f bacteria are determined. The results are shown below:
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Experiment demonstrating that physical contact between bacterial cells is ... On crossing with F− strains this new strain produced 1000 times as many ... This procedure is called interrupted mating .
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Because the centromere itself serves as a marker, in Neurospora it is possible to map a single gene pair. It is also called a two-point cross. ... Whereas in Neurospora the meiotic products occur in an ascus in a linear order (ordered tetrads) this is not true for other fungi in Ascomycetes which have unordered tetrads.
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