Related Words

Chromosomes: Structures in the nucleus of a eukaryotic cell that consist of DNA molecules that contain the genes.

Sex Chromosomes: The chromosomes that determine the sex of an organism. In humans, females have two X chromosomes, and males have one X chromosome and one Y chromosome. Chromosome that determines the gender . . . View Full Definition

Eukaryote: A type of cell found in many organisms including single-celled protists and multicellular fungi, plants, and animals; characterized by a membrane-bounded nucleus and other membraneous organe . . . View Full Definition

Cytogenetics: The study of the physical appearance of chromosomes.

Crossing Over: The breaking during meiosis of one maternal and one paternal chromosome, the exchange of corresponding sections of dna, and the rejoining of the chromosomes. This process can result in an ex . . . View Full Definition

Flow Cytometry: Analysis of biological material by detection of the light- absorbing or fluorescing properties of cells or subcellular fractions (i.e., chromosomes) passing in a narrow stream through a lase . . . View Full Definition

Flow Karyotyping: Use of flow cytometry to analyze and separate chromosomes according to their dna content.

Genetic Linkage Map: A chromosome map showing the relative positions of the known genes on the chromosomes of a given species.

Fluorescence In Situ Hybridization (FISH): A physical mapping approach that uses fluorescein tags to detect hybridization of probes with metaphase chromosomes and with the less- condensed somatic interphase chromatin.

Cloning Vector: Dna molecule originating from a virus, a plasmid, or the cell of a higher organism into which another dna fragment of appropriate size can be integrated without loss of the vectors capacity . . . View Full Definition