(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.
An extra chromosome number 21 results in Down Syndrome. A missing sex chromosome results in an X0 offspring who has Turner's syndrome. An extra X chromosome results in Klinefelters syndrome (XXY). 7. How many chromosomes are present in the abnormal karyotype: ________. 8. What is the diploid chromosome number for this karyotype: _________. 9.