BIOL 3600 Lecture Notes - Lecture 6: Chorionic Villus Sampling, Centromere, Amniocentesis
Document Summary
A region of a chromosome to which spindle fibers attach during cell division. The location of a centromere gives a chromosome its characteristic shape. metacentric. Describes a chromosome that has a centrally placed centromere. submetacentric. Describes a chromosome whose centromere is placed closer to one end than the other. acrocentric. Describes a chromosome whose centromere is placed very close to, but not at, one end. sex chromosomes. In humans, the x and y chromosomes that are involved in sex determination. autosomes. In humans, chromosomes 1 to 22 are autosomes. A complete set of chromosomes from a cell that has been photographed during cell division and arranged in a standard sequence. A method of sampling the fluid surrounding the developing fetus by inserting a hollow needle and withdrawing suspended fetal cells and fluid; used in diagnosing fetal genetic and developmental disorders; usually performed in the sixteenth week of pregnancy.
