<Li> Unequal crossing over </Li> <Li> Breaking without rejoining </Li> <P> For synapsis to occur between a chromosome with a large intercalary deficiency and a normal complete homolog, the unpaired region of the normal homolog must loop out of the linear structure into a deletion or compensation loop . </P> <P> Types of deletion include the following: </P>

Deletion of part of a chromosome may be lethal in a male