chiasma frequency

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• Chiasma (genetics) — A chiasma (plural: chiasmata), in genetics, is thought to be the point where two homologous non sister chromatids exchange genetic material during chromosomal crossover during meiosis (sister chromatids also form chiasmata between each other, but …   Wikipedia

• chiasma — (= chiasmata (plural) ) Junction points between non sister chromatids at the first diplotene of meiosis, the consequence of a crossing over event between maternal and paternally derived chromatids. A chiasma also serves a mechanical function and… …   Dictionary of molecular biology

• eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

• Chromosomal crossover — Thomas Hunt Morgan s illustration of crossing over (1916) A double cros …   Wikipedia

• Color vision — White light shone onto a green surface is perceived as green by the human eye, and processed as such in the brain s visual cortex …   Wikipedia

• syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… …   Medical dictionary

• List of biology topics — Biology is the study of life and its processes. Biologists study all aspects of living things, including all of the many life forms on earth and the processes in them that enable life. These basic processes include the harnessing of energy, the… …   Wikipedia

• Trigeminal nerve — Nerve: Trigeminal nerve Trigeminal nerve, shown in yellow …   Wikipedia

• B chromosome — In addition to the normal karyotype, wild populations of many animal and plant species contain supernumerary or B chromosomes. By definition, these chromosomes are not essential for the life of a species, and are lacking in some (usually most) of …   Wikipedia

• Intracranial dolichoectasias — The term dolichoectasia means elongation and distension. It is used to characterize arteries throughout the human body which have shown significant deterioration of their tunica intima (and occasionally the tunica media), weakening the vessel… …   Wikipedia