 There are two types of chromatin . Euchromatin is the less compact DNA form , and contains genes that are frequently expressed by the cell . The other type , heterochromatin , is the more compact form , and contains DNA that is infrequently transcribed . This structure is further categorized into facultative heterochromatin , consisting of genes that are organized as heterochromatin only in certain cell types or at certain stages of development , and constitutive heterochromatin that consists of chromosome structural components such as telomeres and centromeres . During interphase the chromatin organizes itself into discrete individual patches , called chromosome territories . Active genes , which are generally found in the euchromatic region of the chromosome , tend to be located towards the chromosome 's territory boundary . 
 <a href='dey_it' title='1'><mark>There</mark></a> are two types of chromatin . Euchromatin <a href='drop_aux' title='2'><mark>is</mark></a>the less compact DNA form , and <a href='uninflect' title='3'><mark>contains</mark></a> genes <a href='null_relcl' title='4'><mark>that</mark></a>are frequently expressed by the cell . The other type , heterochromatin , <a href='drop_aux' title='5'><mark>is</mark></a>the more compact form , and <a href='uninflect' title='6'><mark>contains</mark></a> DNA <a href='null_relcl' title='7'><mark>that</mark></a>is infrequently transcribed . This structure is further categorized into facultative heterochromatin , consisting of genes <a href='null_relcl' title='8'><mark>that</mark></a>are organized as heterochromatin only in certain cell types or at certain stages of development , and constitutive heterochromatin <a href='null_relcl' title='9'><mark>that</mark></a><a href='uninflect' title='10'><mark>consists</mark></a> of chromosome structural components such as telomeres and centromeres . During interphase the chromatin <a href='uninflect' title='11'><mark>organizes</mark></a> itself into discrete individual patches , called chromosome territories . Active genes , which are generally found in the euchromatic region of the chromosome , tend to be located towards the chromosome <a href='null_genetive' title='12'><mark>'s</mark></a>territory boundary . 
It is 2 types of chromatin . Euchromatin the less compact DNA form , and contain genes are frequently expressed by da cell . The other type , heterochromatin , tdamore compact form , and contain DNA is infrequently transcribed . This structure is further categorized into facultative heterochromatin , consisting of genes r organized as heterochromatin only in certain cell types or at certain stages of development , and constitutive heterochromatin consist of chromosome structural components such as telomeres and centromeres . During interphase the chromatin organize itself into discrete individual patches , called chromosome territories . Active genes , which arrenerally found in the euchromatic region of thdahromosome , tend to be located towards thedaromosome  territory boundary .