Thursday, February 09, 2006
New Evidence Supports Common Ancestry
"Critics of evolution cite scientific debates to undercut Darwin's credibility. That strategy fails when research clears up some of the issues. Results from two separate research projects announced this week make that point," observes Robert C. Cowen of the Christian Science Monitor.
- They found their proof in Nicaragua's isolated volcanic crater Lake Apoyo. There, two species of cichlid fish — Midas cichlid and Arrow cichlid — live together. Detailed genetic, morphological, and ecological study confirms their relationship as separate species that evolved from a common ancestor. They live separate lives in the same geographical space. Misas feeds along the bottom. Arrow exploits the open water. The two do not interbreed.
- Vincent Stavolainen at Britain's Royal Botanic Gardens in Kew and nine fellow scientists find what they call "clear support" for Darwin's idea in palm trees on Lord Howe Island 600 miles east of Australia. Two species of the trees live side by side. The scientists find it "highly unlikely" that they evolved while geographically separated. There is strong reason to conclude that they evolved from a common ancestor without geographical separation