Saturday, April 3, 2010

Tour of the basics

What is DNA- There’s instructions of information for a living organism to grow and lives in the nucleus of every cell. Detailed plans for the building parts of the cell.



What is a gene- Instruction manual for the body. They give direction for the building of all proteins that function the body. They are made of DNA.



What is a chromosome- Each cell in our body contains a lot of DNA, if it is stretched out it stretches over three meters long. DNA is compacted unit called chromosomes. It starts as a double helix then wrapped around proteins, packed tightly to form a chromosome. There are 46 chromosomes in a human body, each parent gives a child 23 chromosomes.



What is a protein- They are machines that make the body function. They work as receptor proteins to distinguish pain by sending waves to the brain.



What is heredity- The passing of traits from parents to child is a basis of heredity, a person’s genes may specify a certain hair color. One complete set of chromosomes are given to the child from each of the parent.

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