divendres, 4 de febrer del 2011

The writing

What do you think about this paragraph?

Dick Kemp told me he met Francis Crick at Cambridge. Crick had told him that some Cambridge academics used LSD in tiny amounts as a thinking tool, to liberate them from preconceptions and let their genius wander freely to new ideas. Crick told him he had perceived the double-helix shape while on LSD.

The Listening



Please listen and answer the questions:

1) What is the meaning of the acronym DNA?
2) How the base pairs Adenine, Thymine, Guanine and Cytosine are connected?
3) Could Adenine  be connected with Guanine? Why?
4) Besides the base pairs. How other components have the DNA strand?
5)  What is a gene?