قراءة فى جينات أسرة سيدنا أدم وعنصرية قابيل.. ومقاربة الاديب محسن خالد

Quote: Autosome From Wikipedia, the free encyclopedia This article is about a type of chromosome. For the ancestral discovery method using autosomal DNA, see Genealogical DNA test#Geographic origin tests. An autosome is a chromosome that is not an allosome (i.e., not a sex chromosome).[1] Autosomes appear in pairs whose members have the same form but which differ from other pairs in a diploid cell, whereas members of an allosome pair may differ from one another and thereby determine sex. For example, in humans there are typically 22 pairs of autosomes and one allosome pair. The allosome pair consists of two X chromosomes (female) or one X and one Y chromosome (male). (Unusual combinations are XYY, XXY, XXX, XXXX, XXXXX or XXYY, among other allosome combinations, are known to occur. These generally cause developmental abnormalities.) The autosome pairs are labeled with numbers (1-22 in humans), and allosomes are labeled with their letters. An autosome is any of the numbered chromosomes, as opposed to the sex chromosomes. Humans have 22 pairs of autosomes and one pair of sex chromosomes (the X and Y). Autosomes are numbered roughly in relation to their sizes in base pairs. A chromosome not involved in sex determination. The diploid human genome consists of a total of 46 chromosomes: 22 pairs of autosomes, and 1 pair of sex chromosomes (the X and Y chromosomes). [2]

(عدل بواسطة بريمة محمد on 12-30-2012, 06:52 AM)
(عدل بواسطة بريمة محمد on 12-30-2012, 07:08 AM)
(عدل بواسطة بريمة محمد on 12-30-2012, 07:13 AM)