Average Weather in September in Newport East Rhode Island, United States. In Newport East, the month of September is characterized by falling daily high temperatures, with daily highs decreasing by 8Â°F, from 75Â°F to 67Â°F over the course of the month, and rarely exceeding 82Â°F or dropping below 59Â°F.
Recombination is an integral part of the pairing of homologous chromosomes. It occurs between non-sister chromatids during the pachytene stage of meiosis I (the first stage of meiosis) and possibly before, when the homologous chromosomes are aligned in zygotene (Fig. 8.3).
Intermolecular recombination: 1  A single, reciprocal cross-over can occur between two linear dsDNA molecules as shown in panel A below, or a single, 2  reciprocal cross-over can occur between two linear dsDNA molecules as shown in panel B below. In most bacteria with a circular chromosome, such a recombination event would be lethal because the chromosome could not replicate properly and it would be ultimately degraded by DNA exonucleases. 2  Likewise, recombination between a linear DNA molecule and a circular plasmid would destroy the plasmid.