Answer:
From smallest to largest its gene, chromosome, cell.
Explanation:
gene is the smallest of those three and cell is the largest.
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I believe that the answer is A.
Arranged in layers of rock in the ground
Answer:
B
Explanation:
You can't change your DNA as far as I know and if you inherit exact copies of DNA from your parents that means you're a clone which human clones don't exist. You inherit genes from both your mother and father i.e you have blue eyes like your dad and brown hair like your mom.