Answer:
down syndrome
Explanation:
people with down syndrome have an extra chromosome in the twenty-first pair
Every organism is unique, even though the nucleotides making up DNA are all the same, because the structure is different in every organism. In other words, it's just the order in which nucleotides are placed that differs each organism from one another.
Explanation:
I'm assuming this is a T or F question. The answer is F, because the mitochondria of an animal would produce vitamin D, so the answer is F.
Answer:
an enzyme is a protein which is used to break down food
Explanation:
