A gen is a segment of DNA. containing a particular

sequence of letters is a bite like a paragraph in a 

book. Chromosomes are for too small to see with

the naked eye-you'd meed about 100,000 of them 

just to fill a period. Even so, each chromosome 

contains a whipping 7 feet (2 meters of DNA)

your genes come from your parents, their

come from their parents, and so on all way

back to the first living thing that ever existed.

They were passed on to you in chromosomes

carried by sperm and egg cell. Sperm and egg

cell have only 23 chromosomes each- half the

usual amount. When they meet and form an

embryo, they create a new person with full set

of 46 chromosomes.

Two of your 46 chromosomes are special they control your sex.

these sex chromosomesa are sheped like the letter X and Y. If you

have two Xs, you're a girl. If you have an A and Y you're a boy.

The trait that you inherit your parent are determined by DNA. This is true for all living things : The cells or every plant a animal contain DNA molecules. DNA carries the genetic information that determines what the plants and animals will look like among other traints.

*1/2 cup green split peas. *1/8 teaspoon salt. *1 cup cold water. *Blender. *Strainer *Meansurina. *Cups and spoon. *Liquid detergent. *Small glass tubes or container. *Meat tenderizer. *Rubbing alcohol. *Small wooden stir sticks.

Alcohol is less dense than water, so it floats on top. Because two separate layers are formed, all of the fats (lipid) and protein that you broke up in Steps 2 and 3, along with the DNA, have to decide: "Which layer should I go to?

Most particles and molecules will star below the alcohol or dissolve in it. DNA will float in the alcohol and will not be dissolve. This makes it easy to extract.