How are birds related?
This is not just an academic question. Every living thing is the end-product of an evolutionary history and carries the evidence of that descent. Until recently there were only two ways to reconstruct this history: from the fossil record and from the constitution and distribution of living things. Now there is a third: the comparative studies of DNA and its byproducts, which form the basis of the work of Charles Sibley and his collaborators. |
SIBLEY's SEQUENCE
Based on DNA hybridization comparisons by Charles G. Sibley - Burt L. Monroe, Jr. |