"You either have XX or XY chromosomes," Rep. Nancy Mace, R-S.C., wrote Feb. 20 on X. "Those are the options." Most commonly, a person is born with two X chromosomes (female) or an X and a Y (male).

For instance, deletions that span a centromere result in an acentric chromosome that will most likely ... that recombination hotspots average about 1.5 kilobases in length and are surrounded ...

HIV-1 Vif induces a unique and prolonged pseudo-metaphase arrest by disrupting phosphatase feedback regulation at the kinetochore.

Larger chromosomes contain a higher number of A-T or G-C base pairs, leading to higher levels of Hoechst and chromomycin staining, respectively. As illustrated in Figure 1, chromosome 21 ...

Gene editing techniques may eventually allow trisomy to be treated at the cellular level, according to an in vitro proof-of-concept study. Down syndrome is caused by the presence of a third copy ...