Articles tagged with Sexual Recombination
A frozen chunk of a bird's genome has rewritten the understanding of the bird family tree, revealing that most birds were misclassified due to suppressed recombination. Scientists discovered that one section of the genome behaved unusually, leading to incorrect groupings and a more complex tree.
A research team sheds light on Dmc1 filament assembly mechanisms using single-molecule experiments. Swi5-Sfr1 and Hop2-Mnd1 proteins regulate Dmc1 assembly through distinct mechanisms, promoting efficient strand exchange during homologous recombination.
Researchers have discovered that inactivating the RECQ4 gene can treble recombination frequency, leading to increased chromosome shuffling and greater genetic diversity. This discovery is expected to improve crop breeding operations by allowing breeders to combine more genes in a single generation.
The study found a positive correlation between genetic recombination and adaptation rate, with a threshold recombination value of 2 cM/Mb indicating optimal genomic adaptation. This suggests that recombination facilitates adaptation and that linkage cost disappears beyond this threshold.
Researchers at Indiana University found that asexual lineages are more susceptible to extinction due to fast-paced gene conversion processes. This process exposes pre-existing deleterious recessive mutations, contributing to the decline of asexual populations.
Dr. Lin's work reveals a modified sexual cycle of C. neoformans with only one mating type, suggesting increased genetic diversity and pathogenic characteristics
The study analyzed a dataset of 107 plants and animals, showing that the opportunity for selection to act on a gamete can influence recombination rates. The researchers found that strong selection on female gametes could lead to lower recombination rates in females.