Before a cell divides, its DNA is replicated so that each daughter cell inherits the same genetic information. The two copies, known as "sister chromatids," are held together by a ring-shaped protein ...

Unlike nuclear DNA, mitochondrial DNA (mtDNA) is circular in nature and organized as mitochondrial nucleoids comprised of DNA-protein complexes that are distributed in the matrix. It is also inherited ...

Scientists have finally recreated the initial steps of HIV infection in a test tube, offering an incredibly zoomed-in view of the virus in action. The amazing images show a cone-shaped shell of ...