Final answer:
The most abundant sequence in the human genome is (D) Alu repeats. Alu repeats are short interspersed elements (SINEs) that are about 300 base pairs long and can be found throughout the human genome.
Step-by-step explanation:
The most abundant sequence in the human genome is (D) Alu repeats. Alu repeats are short interspersed elements (SINEs) that are about 300 base pairs long and can be found throughout the human genome. They are highly repeated and contribute to about 10% of the total human genome. The Alu repeats are useful in DNA fingerprinting because each person has a unique number and distribution of Alu SINEs in their genome.