What are chromosomes made up of?
Kindly refer to the following link:
https://www.meritnation.com/ask-answer/question/are-chromosomes-made-up-of-dna/the-fundamental-unit-of-life/8025007
https://www.meritnation.com/ask-answer/question/are-chromosomes-made-up-of-dna/the-fundamental-unit-of-life/8025007