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Chromosomes in Medical Dictionary

Autosomal recessive

... An abnormal gene on one of the autosomal chromosomes (one of the first 22 "non-sex" chromosomes ) from each parent is required to cause the ... in an autosomal recessive manner. Autosomal chromosomes are the non-sex ...

Chromosomes

... chromosomes in multi ple miscarriage s: Couples who have ... responsible for the miscarriage s. chromosomes are the units of genetic information that ... Twenty-three distinctive pairs, or 46 total chromosomes , are located within the nucleus (central ...

Gene

... of a normal protein . Since the autosomal chromosomes are paired, there are 2 copies of each gene . ... in an autosomal recessive manner. Autosomal chromosomes are the non-sex chromosomes . If both parents are carrier s of the mutated ...

Karyotyping

... Use of flow cytometry to analyze and/or separate chromosomes on the basis of their DNA content. Karyotyping is done to: Determine whether the chromosomes of an adult have an abnormality that can be ... Karyotyping A labor atory procedure in which chromosomes are separated from cells, stained and arranged ...

Sex-linked recessive

... disease s are inherited through one of the "sex chromosomes " -- the X or Y chromosomes . Autosomally inherited disease s are inherited through the non-sex chromosomes (autosomes), pairs 1 through 22. Sex-Linked ...

Translocation

... chromosome material. There are three # 21 chromosomes , just like there are in trisomy 21, but one of the 21 chromosomes is attached to another chromosome , instead of ... exchange of chromosome segments between two chromosomes that do not belong to the same pair of ...

Trisomy

... Condition with three rather than the normal two chromosomes #13. Children born with this syndrome have ... Trisomy The condition of having three identical chromosomes , instead of the normal two. For Your Information ... attached to the 21st of the 23 pairs of chromosomes normally present in the human genome. This third ...

Turner syndrome

... in females. Female cells normally have two X chromosomes . In Turner syndrome , the girl's cells are ... syndrome . People with this syndrome have 45 chromosomes , including one missing or incomplete X ... are caused by extra or missing pieces of chromosomes . ...

Autosomal dominant

... dominant Definition: A single, abnormal gene on one of the autosomal chromosomes (one of the first 22 "non-sex" chromosomes ) from either parent can cause certain disease s. Autosomal dominant ...

Carrier

... disease s are inherited in an autosomal recessive manner. Autosomal chromosomes are the non-sex chromosomes . If both parents are carrier s of the mutated gene , ... Hepatitis ...

Fertilization

... into two. The result is that some cells have the normal number or 46 chromosomes , and other cells have an extra #21 or 47 chromosomes : ... Fertilization is internal; in most species cross fertilization ...

Hemophilia

... children from a gene located on the X chromosome . Females have two X chromosomes , while males have one X and one Y chromosome . Hemophilia is a ... A woman who carries a disease -associated mutated gene on one of her X chromosomes , has a 50% chance of passing the gene to her son. Disseminated ...

Ovum

... With the union of a sperm and an ovum , an embryo acquires the chromosomes that determine the sex of the fetus (XX=female; XY=male). For the ... sperm cell contains either an X or a Y chromosome . These X and Y chromosomes determine the child's genetic sex. OVULATION - The maturation and ...

Sperm

... sperm cell . Each mature reproductive cell carries a single set of 23 chromosomes . reproductive system ... The subjects' sperm were analysed after ... person makes eggs or sperm there are several possibilities. The normal chromosomes 21 and 14 may be passed on, resulting in a normal baby. Do not donate ...

Aarskog syndrome

... is associated with a number of different dysmorphic disorders, including Aarskog syndrome ; de Lange syndrome ; the deletion syndrome s involving chromosomes 4p, 4q, ... ...

Alpha fetoprotein

... for your condition with your healthcare professional. Elevated alpha fetoprotein (AFP) Carcinoembryonic antigen (CEA) Increased tendency of chromosomes to break on exposure to radiation Genetic testing for mutation s in the ATM gene . X-ray s showing underdeveloped, small thymus in childhood ....

Amniocentesis

... from amnio is between one in 400 and one in 200, according to the CDC. Amniocentesis to test the amniotic fluid around the baby or abnormal chromosomes and other substances such as alpha fetoprotein . This test is first done between the 15th and 18th weeks of a pregnancy . Tay-Sachs disease ...

Anatomy

... scope that is used to directly visualize the internal anatomy of a hollow organ . Nucleus: 1) In cell biology, the structure that houses the chromosomes . 2) In neuro anatomy , a group of nerve cells. Search All of MedicineNet For: search help Printer-Friendly Format ... The most sensitive area ...

Anesthesia

... drug used in this type of anesthesia . Local anesthesia helps to make the patient more comfortable. Cyto genetics -The lab looks at the chromosomes of cells from samples of peripheral blood , bone marrow , or lymph node s. local anesthesia (an-es-THEE-zha) Drugs that cause a temporary ...

Antigen

... the antigen that stimulated it to mature. The same principle holds with memory B cells. Carcinoembryonic antigen (CEA) Increased tendency of chromosomes to break on exposure to radiation Genetic testing for mutation s in the ATM gene . X-ray s showing underdeveloped, small thymus in childhood ...

Conception

... mother's egg cell ( ovum ) contains an X chromosome , while the father's sperm cell contains either an X or a Y chromosome . These X and Y chromosomes determine the child's genetic sex. An alteration in DNA that occurs after conception . Somatic mutation s can occur in any of the cells of ...

Down syndrome

... such as slanted eyes and a broad face. DPT ... Down syndrome and certain other genetic disease s-Some disease s caused by abnormal chromosomes may increase the risk of leukemia . Down syndrome A disorder caused by the presence of an extra chromosome 21 and characterized by mental ...

Fragile X syndrome

... after birth (e.g. Almost as common, particularly among males, is fragile X syndrome , in which a segment of the X chromosome (one of the chromosomes that determines gender) is abnormal. defects in the chromosome or chromosomal inheritance (for example, fragile X syndrome , Angelman ...

Genes

... New devices may help some epilepsy patients who are not seizure -free after taking medications. Genes are found in pairs, just as the chromosomes are. One member of each gene pair is inherited from our mother, while the corresponding member of the gene pair is inherited from our father. ...

Genetics

... (HNPCC)* ... Genetics is the study of heredity and how traits are passed along from parents to offspring. Genes are contained within the chromosomes found in the egg and sperm . Genetics & Genomics Sequencing the human genome has generated new interest in examining the role of genetic ...

Germ

... cell : The eggs and sperm are the germ cells: the reproductive cells. Each mature germ cell is haploid in that it has a single set of 23 chromosomes containing half the usual amount of DNA and half the usual number of genes . Germ cell tumor s of the ovary , uncommon but aggressive ...

Glucose

... can result. Intravenous (IV): Infusion of fluids, such as glucose , through a thin tube into a vein in the arm. Increased tendency of chromosomes to break on exposure to radiation Genetic testing for mutation s in the ATM gene . X-ray s showing underdeveloped, small thymus in childhood ...

Glucose tolerance test

... determine levels of cholesterol , triglycerides, glucose , insulin , and uric acid . A glucose tolerance test is ... Increased tendency of chromosomes to break on exposure to radiation Genetic testing for mutation s in the ATM gene . X-ray s showing underdeveloped, small thymus in childhood ...

Heredity

... What causes it? Genetics is the study of heredity and how traits are passed along from parents to offspring. Genes are contained within the chromosomes found in the egg and sperm . Heredity . A small percentage of people who develop melanoma have a family history of the disease . Having a ...

Hypotonia

... such as muscular dystrophy or cerebral palsy . Hypotonia Reduced or diminished muscle tone. Karyotyping A labor atory procedure in which chromosomes are separated from cells, stained and arranged so that their structure can be studied under the microscope. Microcephaly An abnormally small head. ...

Immunoglobulin

... IgA and IgE levels Decreased B and T cell screen Elevated alpha fetoprotein (AFP) Carcinoembryonic antigen (CEA) Increased tendency of chromosomes to break on exposure to radiation ... Pulse test. Serum immunoglobulin G (IgG) antibodies test. Total serum immunoglobulin test. ...

In situ

... technique used to determine how many copies of a specific segment of DNA are present in a cell . It is also used to identify structurally-abnormal chromosomes . In situ breast cancer In situ breast cancer refers to a type of cancer in which the breast cancer cells have remained contained within ...

Neonatal

... Health Care Provider ... Neonatal ALD is much less common. In this type of ALD the faulty gene is not X-linked but found on one of the other chromosomes , so both boys and girls can be affected. Progressive symptoms ... NEONATAL : The first four weeks of life after birth . NEOPLASM : An ...

Opitz Syndrome

... chromosome 11. a number of different dysmorphic disorders, including Aarskog syndrome ; de Lange syndrome ; the deletion syndrome s involving chromosomes 4p, 4q, 5p (cat cry syndrome ), and 18q; the fetal alcohol syndrome ; Seckel syndrome ; Smith-Lemli- Opitz syndrome ; ... ...

Serum

... IgA and IgE levels Decreased B and T cell screen Elevated alpha fetoprotein (AFP) Carcinoembryonic antigen (CEA) Increased tendency of chromosomes to break on exposure to radiation ... SERUM : The clear, thin, and sticky fluid portion of the blood that remains after coagulation ....

Thymus

... heart and its large vessels, the esophagus , thymus , lymph node s and other structures and tissue s. medulla ... Increased tendency of chromosomes to break on exposure to radiation Genetic testing for mutation s in the ATM gene . X-ray s showing underdeveloped, small thymus in childhood ...

Trisomy 13

... Trisomy 13 syndrome : Condition with three rather than the normal two chromosomes #13. Children born with this syndrome have multi ple malformations and mental retardation due to the extra chromosome #13. Trisomy 13 ...

Trisomy 18

... as well as health problems involving nearly every organ system in the body. Trisomy 18 syndrome : There are three instead of the normal two chromosomes #18. Children with this condition have multi ple malformations and mental retardation due to the extra chromosome #18. Trisomy 18 ...
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