There are several measure to describe the distribution of some observations. The mean for example give an idea about the average observation. The measure that gives us an idea about variability is the standard deviation; Intuitively it measures how much observations differ from the average.
In cytogenetics, the notation used follows a series of rules.
When you read that something happened, for example a translocation, in the position 13q12, this means that it is in the chromosome 13, in the long arm (q), band 1 and sub band 2.
<span>Biotechnology can increase the variety and agricultural products through through tissue culture, nitrogen fixation , plant pest control and the provision of plant hormones.</span>