(April 2014) In law and government, de jure (/deÉª ËdÊÊrÉª/; Latin: de iure, in law) describes practices that are legally recognized by official laws. In contrast, de facto (in fact or in practice) describes situations that are generally known to exist in reality, even if not legally authorized.
Only a portion of them are chromosome abnormalities. Single gene disorders are conditions that are caused by a change in a single gene. Because there are thousands of genes, there are thousands of single gene disorders. This group of disorders cannot be diagnosed by a karyotype.
Karyotype. A karyotype results in a picture of someoneâs chromosomes, taken from a single cell. A karyotype can reveal large segments of missing or extra genetic material (e.g., in Down syndrome, there are three copies of chromosome 21; a female with Turner syndrome only has one X chromosome instead of two). 46 XY = Normal Male.