LINE-1 Sequences and Alu Sequences Can Occasionally Cause Problems by Jumping

LINE-1 sequences and Alu sequences can occasionally cause problems by jumping into an important gene.They can also lead to:

A) Chromosome breakage.
B) Retroviral infections, by serving as "landing pads" for retroviral cDNAs.
C) The transfer of genes from the nucleus to the mitochondria, thereby maintaining the mitochondrial genome on the evolutionary time scale.
D) Faulty crossing over between misaligned chromosomes in meiosis, leading to deletions and duplications.
E) Occasional expansions of the tandemly arranged sequences.