Deoxyribonucleic Acid

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Have you ever wondered what a human has in common with a tree and bacteria? The answer to that is DNA. DNA (also known as deoxyribonucleic acid) is a coding in the nucleus containing the genetic information. It contains information about growth and function. DNA is the molecular instructions of life. It makes anything living common because all living organisms have DNA. DNA come together and form chromosomes after a while. When the cell goes through cell division, the DNA is copied and passed onto the new cell. The DNA structure is very unique. When one strand is opened, it is 6 feet. Although it is 6 feet, it is coiled up tightly to fit one out of trillions of cells. Each cell has 2 meters in length of DNA. It is usually double stranded. A (Adenine) pairs with T (Thymine). C (Cytosine) pairs with G (Guanine). When cell division occurs, the DNA is double for both daughter cells. The two strands unwind, unzip and separate in search for a new strand to interact with and form a cell. Sometimes, an error can be made. That would be mutation, because the error would be repeated every time it goes through cell division. Mutations can be either harmful or beneficial. All organisms start as one cell, but then divides into two, which again divides into two forever, even after growth stops. This is how organisms grow. It replaced faulty cells throughout the body. This is also how unicellular organisms reproduce. Cell division is also known as mitosis. Before mitosis can occur, the cell spends a long period of time in the phase called interphase. There it prepares to divide and has 46 chromosomes. Then mitosis begins. That is when the nucleus divides to form two identical nuclei. The second step taken would be prophase. That is when chromoso... ... middle of paper ... ... again and again each time the cell replicates through mitosis. That is because the daughter cell has identical genetic information as the mother cell. As you can see, DNA is a very important part of life. It is the reason we are all here today. DNA also known as deoxyribonucleic acid gives the molecular instructions of life. The cell has gone through mutation after over mutation to be what we are today. Mutations are the reason we have all evolved. The DNA structure is also complicated. One strand of DNA measures 6 feet. Then it is tightly coiled up with another strand of DNA to fit a tiny packaging in the nucleus which is the cell which makes up the body with other trillions of cells. To replicate, the cell goes through cell division. That is also known as mitosis. That is when one parent cell produces two daughter cells. Imagine, what would Earth be without DNA?
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