The questions in this quiz are suitable for GCSE biology students studying plant cells, animal cells, microscopes, eukaryotes and prokaryotes. If you struggled with the quiz, don't panic - we've ...

This way DNA can reproduce itself without changing its structure -- except for occasional errors, or mutations. The structure so perfectly fit the experimental data that it was almost immediately ...

But James Watson and Francis Crick's claim was a valid one, for they had in fact discovered the structure of DNA, the chemical ... made possible the era of "new biology" that led to the ...

DNA, or deoxyribonucleic acid, is the hereditary material found in nearly all living organisms. It carries the genetic instructions for the development, functioning, growth, and reproduction of all ...

(Getty Images) Two new landmark studies show how a seeming tangle of DNA is actually organized into a structure that coordinates thousands of genes to form a sperm cell. The work, published March 3 as ...

Figure 1: a, Amino acid sequences of recombinant Sso7d and Sac7d. The molecular surface of Sso7d is irregular with numerous ridges and valleys (Fig. 2a). The excellent matching of shapes and ...