Dna Definition for Kids




Dna Definition for KidsDNA or Deoxyribonucleic acid is actually a molecule which has the instructions an organism must develop, live and reproduce. These instructions are located inside each cell and are passed down through parents to their children.

DNA structure

DNA is composed of molecules known as nucleotides. Every nucleotide includes a sugar group, a nitrogen base and a phosphate group. The four kinds of nitrogen bases are thymine (T), adenine (A), cytosine (C) and guanine (G). The order of these bases is exactly what determines DNA's instructions or genetic code. Much like the way the order of letters in the alphabet could be used to make a word, the order of nitrogen bases in a DNA sequence forms genes, which within the language of the cell, tells cells the way to make proteins. One more type of ribonucleic acid, nucleic acid or RNA, transmits genetic information from DNA into proteins.

Dna Replication for Kids

DNA replication is the procedure of replicating a double-stranded DNA strand, prior to cell division (in eukaryotes, throughout the S phase). The two resulting dual strands are similar (if the replication went well) and all of them consists of one original and one freshly synthesized strand. This is known as semiconservative replication. The procedure of replication contains three steps, replication, initiation and termination. Initiation In the initiation step, a number of key factors are recruited to an origin of replication. This is a sequence which is rich in adenine-thymine base sets, which are more effortlessly separated than cytosine-guanine base sets.

When the strands are initially unwound, a number of factors come into perform. The partially unwound strands form a replication bubble, with a single replication fork on either end. Every group of enzymes at the replication fork proceeds far from the origin, unwinding and replicating the DNA strands while they move.

The factors involved are:

A primase[?], which produces an RNA primer to be employed in DNA replication.

A helicase[?], which unwinds the DNA ahead of the fork.

A DNA holoenzyme[?], which is actually a complex of enzymes that works the actual replication. You can find two holoenzymes at each replication fork, one to replicate each strand of DNA.

What Does Dna Stand For

The letters DNA stand for Deoxyribonucleic Acid. DNA is actually the molecule that holds genetic information. DNA is material that handles inheritance or legacy of hair color, eye color, bone density, stature and lots of other human characteristics. DNA is a lengthy, thin string-like object. Our body's cells each include a complete sample of our DNA. Numerous properties of the human body's cells could be coded. The genetic code or DNA code as it is known as, is passed via the sperm and egg to the offspring. dna tests is performed in the areas of paternity issues, criminal investigation and tracing ancestry.

The above information gives the answer to, What do the letters DNA stand for?. Now find out the answer to:

What is the Meaning and Origin of the term Acronym?

The meaning of acromyn is A term formed from the first letters of a multi-word name. What is the origin of the word? The term derives from the Greek word 'acro' meaning 'tip, end' and the English term 'onym' meaning name e.g. RADAR or NATO.



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