25 results found
Health topics
… of developing certain diseases. Certain changes in genes or chromosomes may cause problems in various body processes or functions. What are chromosomes? Many genes together make up larger structures within the cell called chromosomes. Each cell normally contains 23 pairs of …
Medical tests
… to identify and evaluate the size, shape, and number of chromosomes in a sample of body cells. Extra or missing chromosomes, or abnormal positions of chromosome pieces, can … Why It Is Done Karyotyping is done to: Find out whether the chromosomes of an adult have a change that can be passed on …
Health topics
Medical tests
… done to find birth defects caused by an abnormal number of chromosomes . It also can reveal the sex and blood type of … to look for birth defects caused by too many or too few chromosomes, such as trisomy 18 and Down syndrome (trisomy … DNA will be looked at to see if there are missing or extra chromosomes. If there is an extra or missing chromosome (a …
Health topics
… syndrome occurs when a boy is born with one or more extra X chromosomes . Most males have one Y and one X chromosome. Having extra X chromosomes can cause a male to have a variety of physical … syndrome occurs when a boy is born with one or more extra X chromosomes . Most males have one Y and one X chromosome. …
Medical tests
… baby has Rh-positive blood. Results The genetic material ( chromosomes ) of the cell sample is looked at carefully. Normally there are 46 chromosomes in each cell, arranged in 23 pairs. The number and arrangement of the chromosomes in the sample can show if your baby has a …
Health topics
… by having an extra chromosome . Usually a person has 46 chromosomes, 23 from each parent. A person with Down … by having an extra chromosome . Usually a person has 46 chromosomes, 23 from each parent. A person with Down …
Medical tests
… fetus. The cells are checked for the number and size of chromosomes . This can show if there are any problems that … for the proper number and arrangement of the cell parts ( chromosomes ) that show genetic disease. Normally there are 46 chromosomes in each cell, arranged in 23 pairs. Chromosomes …
Health topics
… Birth defects develop when something is wrong with genes or chromosomes , an organ, or body chemistry. A birth defect … taking some of the baby's cells to look at the genes and chromosomes. No test is 100% accurate. A test may be … Birth defects develop when something is wrong with genes or chromosomes , an organ, or body chemistry. A birth defect …
