Tag: embryo development
-
Centromere Balance Explains Why Some Embryos Stall During Development
Centromeres as Gatekeepers in Early Development When a sperm fertilizes an egg, the resulting zygote must reorganize parental DNA into a unified genome before the first cell division. A key, but often overlooked, player in this process is the centromere, the chromosome region that helps pull sister chromatids apart during division. For years, scientists assumed…
-
Centromere Symmetry in Embryos: Why Some Embryos Stall
Centromeres and early embryo development When a sperm fertilizes an egg, the resulting zygote must quickly reassemble a unified genome from two parental sets of chromosomes. A key part of this process is the centromere, a chromosome region that acts like a handle for pulling the DNA apart during cell division. For decades, scientists believed…