See how telomeres act as protective "caps" on the tips of eukaryotic chromosomes. Also learn how telomerase extends telomeres.

[Free Registration/Login may be required to access all resource tools.] During mitosis, the DNA in a nucleus must replicate. The copied DNA is divided into two genetically identical sets, so that after cytokinesis or cell division, each...

Discover the cutting edge research going on with telomeres. Find out what they are, how they replicate and their role in the aging process.

[Free Registration/Login may be required to access all resource tools.] Sexual reproduction combines gametes from two parents. Gametes are produced by a special type of cell division known as meiosis. Meiosis contains two rounds of cell...

A brief text overview of DNA structure and an introduction or mention of the various forms of DNA.