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June 9, 2021 During meiosis, paternal and maternal chromosomes duplicate, pair, and exchange parts of their DNA in a process called meiotic recombination. In order to mediate this exchange of genetic material, ...
Oct. 24, 2022 New findings suggest an explanation for the century-old mystery of how chromosome recombination is regulated during sexual ...
Mar. 13, 2023 Meiotic recombination assures genetic variation during breeding. During meiotic prophase I, chromosomes are organized in a loop-base array by a proteinaceous structure called meiotic chromosome axis ...
Nov. 17, 2021 Investigators have employed mutant mice to study how the accumulation of genetic errors is managed during egg and sperm ...
Aug. 3, 2021 A new discovery explains what determines the number and position of genetic exchanges that occur in sex cells, such as pollen and eggs in plants, or sperm and eggs in ...
July 6, 2022 Biologists have used population genomics to shed light on the evolution and consequences of a selfish genetic element known as Segregation Distorter (SD). The researchers report that SD has caused ...
Aug. 13, 2021 The initials BRCA2 may be best known for a gene associated with many cases of breast cancer, and the protein encoded by the BRCA2 gene is critical to repairing breaks in DNA. The breakdown of this ...
Jan. 7, 2021 Three studies uncovered the unusual sex chromosomes of platypus, emu and Pekin duck. Platypus have five pairs of sex chromosomes forming an unusual chain shape, while the sex chromosomes of emu and ...
Oct. 22, 2021 Scientists have probed the molecular origins of recombination in RNA viruses. Hiccups during the copying process of viruses cause recombination to take place: the exchange of segments of viral RNA. ...
Dec. 6, 2022 Mitotic chromosomes are pivotal for the inheritance of genetic material. Now, it is already known that chromosomes vary in dimensions among organisms. But what governs mitotic chromosomal size and ...