How DNA duplicate itself?

Answer 1

The DNA molecule split down the middle, where the bases meet. The bases on each side of the molecule are used as a pattern for a new strand.

Copied from Glencoe LIFE SCIENCE

Answer 2

It's complicated. A short version is that an enzyme (helicase) separates the double stranded DNA at many sites along the molecule, resulting in areas called replication forks. In these areas, DNA polymerases move along each strand, called the leading and the lagging strands, reading the bases as they go along, and place a complimentary base down (A-T and C-G). This goes in a 5' to 3' direction. On the leading strand, which is already oriented 5'-3', the polymerase just chugs along no problem. However, on the lagging strand, which is 3'-5', a polymerase replicates in small patches (called Okazaki fragments) which are then glued together by a ligase.

There's a lot more that goes on - a lot of different molecules which do a lot of different things like proof read the DNA to prevent mutations. But that's a (very, very) brief overview. TELL MORE

Answer 3

how detailed of an answer are you looking for? (and DNA doesnt actually copy itself- it gets replicated, not replicates itself.) To actually answer this question id have to write an essay. Here's a summary;

Deoxyribonucleic acid (DNA) is located in the nucleus of a cell. The nucleus is encased by the nuclear envelope. (like a cell membrane, consisting of a phospholipid bilayer embedded with proteins.) The nuclear envelope has nuclear pores, which allow passage of ribosomes. Ribosomes, along with synthesizing (making/'editing') proteins, transport ribonucleicacid (RNA). mRNA, (messenger rna) enters the nucleus inside the ribosome via the nuclear pore. The DNA splits, and the RNA creates a negative of the coding because of the pairing of the nucleic bases (purines and pyrimidines). It then leaves the nucleus and generally makes proteins by developing a chain of amino acid, sequenced by the nucleic bases.

Hope that makes sense! Let me know if you need more information.

Answer 4

DNA replication occurs during the S phase of the cell cycle. Enzymes called DNA polymerases create a new strand of DNA by adding complementary nucleotides to each original strand. The result is two identical copies of the original DNA molecule.

Answer 5

1. DNA unzips

2.free bases come in and attack

3. ttwo new copies are made

Answer 6

The chromosomes duplicate