chromosomal complement

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

• Genome, chromosomal — All of the genetic information in the chromosomes of an organism. For humans, that is all of the DNA contained in our normal complement of 46 rod like chromosomes in virtually every cell in the body. (Mature red blood cells, for one exception,… …   Medical dictionary

• endocrine system, human — ▪ anatomy Introduction  group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …   Universalium

• aging — ag·ing (āʹjĭng) n. 1. The process of growing old or maturing. 2. An artificial process for imparting the characteristics and properties of age. * * * Gradual change in an organism that leads to increased risk of weakness, disease, and death. It… …   Universalium

• translocation — 1. Transposition of two segments between nonhomologous chromosomes as a result of abnormal breakage and refusion of reciprocal segments. 2. Transport of a metabolite across a biomembrane. [trans + L. location, placement, fr. loco, to place]… …   Medical dictionary

• balanced translocation — translocation that results in no more or no less than the normal chromosomal complement. The phenotype is usually normal, but there will be partial aneuploidy in a percentage of the gametes, with a risk of an unbalanced chromosomal complement in… …   Medical dictionary

• Ploidy — Haplo redirects here. For the fictional character, see The Death Gate Cycle. For the aquarium fishes, see Haplochromini. Diploid cells have two homologous copies of each chromosome. Ploidy is the number of sets of chromosomes in a biological cell …   Wikipedia

• Haplogroup T (Y-DNA) — Infobox haplogroup name =T origin date =30,000 years BP origin place =Asia ancestor =K descendants = mutations =M70, M184, M193, M272Haplogroup T (M70, M184, M193, M272) is a human Y chromosome DNA haplogroup. From 2002 to 2008, it was known as… …   Wikipedia

• karyotype — The chromosome characteristics of an individual cell or of a cell line, usually presented as a systematized array of metaphase chromosomes from a photomicrograph of a single cell nucleus arranged in pairs in descending order of size and according …   Medical dictionary

• facultative meiotic parthenogenesis — The diploid chromosomal complement in the reduced oocytes is restored by fusion of the second polar nucleus with the egg pronucleus; see automictic meiotic parthenogenesis …   Dictionary of invertebrate zoology

• Turner's syndrome — Pathol. an abnormal congenital condition resulting from a defect on or absence of the second sex chromosome, characterized by retarded growth of the gonads. [named after Henry Hubert Turner (1892 1970), U.S endocrinologist, who described it in… …   Universalium