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July 19, 2022 —银鲫是其中一个最ccessful invasive fish species in Europe. Its ability to reproduce asexually gives it a major advantage over competing fish. An international ...
Aug. 6, 2020 —The Y chromosome has shrunken drastically over 200 million years of evolution. Even those who study it have used the word 'wimpy' to describe it, and yet it continues to stick around. An ...
Nov. 17, 2021 —Investigators have employed mutant mice to study how the accumulation of genetic errors is managed during egg and sperm ...
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 ...
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, ...
Nov. 9, 2020 —Researchers have clarified how homologous chromosome pairing -- a process necessary for sperm and egg formation where paternally- and maternally-derived chromosomes match and exchange genetic ...
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 ...
Aug. 18, 2022 —Two novel hypotheses have been proposed that address the 'two-fold cost of sex': one of the biggest enigmas in the evolution of sexual ...
May 25, 2023 —The many types of cells in the human body are produced through the process of differentiation, in which stem cells are converted to more specialized types. Currently, it is challenging for ...
Dec. 7, 2022 —Modern eukaryotic cells contain numerous so-called organelles, which once used to be independent bacteria. In order to understand how these bacteria were integrated into the cells in the course of ...