Genetics: Genes and DNA

Three steps are needed to extract DNA from learners' inner cheek cells. The procedure and reasons for each step are explained. As enzymes work on the cells, a series of questions are answered regarding the structure of the DNA molecule....

There are six boxes on this genetics activity. In one, learners draw and label the DNA molecule. In another, they compare pre-mRNA to mRNA. Other boxes require definitions, labeling, and explaining relationships. 

Doctors sometimes order a karyotype, a picture of the chromosomes present in a single cell, in order to check for chromosomal abnormalities or rare diseases. The video explains the relationship among genes, chromosomes, and karyotypes....

[Free Registration/Login may be required to access all resource tools.] Tutorial serves as an introduction to chromosomes. It defines genes, chromosomes, and homologous chromosomes, while providing an explaination of chromatids and...

In this biology worksheet, students review and answer different questions based upon the molecules of DNA and RNA. They look at the specific protein order of the DNA strand and its synthesis.

A pinch of adenine, a dash of thymine and ta-da, you have life! Well, it's not quite that simple, but through this series of activities and experiments young scientists learn about the structure of DNA and how it contains the recipe for...

Middle schoolers come to understand that in sexually reproducing organisms, such as humans, typically half of the genes come from each parent. Students examine a fictional pedigree and determine which gene is responsible for a given...

High schoolers complete a study guide using a website which is an animated primer on DNA, genes, and heredity. The Web site is organized around key concepts. The web links and study guide are included.

Observe a scientist describe the process used to extract DNA from a cell and to analyze it on a gene chip. [1:41]

If you could unravel all the DNA in your body and stretch it out, it would reach to the sun and back...over 100 times! How incredible! Cover basic genetic vocabulary and hear a geneticist speak about your body's internal recipe....