In this article we will discuss about:- 1. Meaning of Pericentric Inversion 2. Chromosome Morphology 3. Occurrence of Pericentric Inversion. Meaning of Pericentric Inversion: When the inverted segment is large, a loop is formed during synapsis and centromere is included in the loop. Crossing over in the loop causes the formation of deficiency-duplication chromatids. Chromosome pairing and crossing over positions [...]
In this article we will discuss about the inversions in natural populations which is caused when the genes in a section of a chromosome is reversed. Inversions occur spontaneously in a large number of plant and animal species. But the most extensive work has been done in Drosophila in which they have been detected in a rather high frequency. In [...]
In this article we will discuss about the inversions in humans which occurs when the genes in a section of a chromosome is reversed. Pericentric Inversion: There are a number of reports of pericentric inversions in human. Breaks occur in both, short (p) and long (q) arms of the chromosomes. The length of inverted segment can be precisely identified by [...]