Chickens and turkeys more dino like than other birds

2006-ca-turkey

A wild turkey. image: Yathin S Krishnappa/wikipedia

Looking at this image of a wild turkey certainly gives a visual impression of features of dinosaurs. 

Chickens and turkeys 'closer to dinosaur ancestors' than other birds  

New research from the University of Kent suggests that chickens and turkeys have experienced fewer gross genomic changes than other birds as they evolved from their dinosaur ancestor.

Professor Darren Griffin and a team at the University's School of Biosciences have conducted research that suggests that chromosomes of the chicken and turkey lineage have undergone the fewest number of changes compared to their ancient avian ancestor, thought to be a feathered dinosaur.

The Kent research is part of a study by a consortium of leading scientists into avian or bird genomes, which tell a story of species evolution. The living descendants of dinosaurs were thought to have undergone a rapid burst of evolution after most dinosaur species were wiped out.

Bird families are confusing 

The detailed family tree of modern birds has however confused biologists for centuries and the molecular details of how birds arrived at the spectacular biodiversity of more than 10,000 species is barely known.

Professor Griffin explained: 'Bird genomes are distinctive in that they have more tiny microchromosomes than any other vertebrate group. These small packages of gene-rich material are thought to have been present in their dinosaur ancestors.

'We found that the chicken has the most similar overall chromosome pattern to its avian dinosaur ancestor.'

The research, which formed part of a vast study carried out over the past four years by the international Avian Phylogenomics Consortium, involved the analysis of the whole genome structure of the chicken, turkey, Pekin duck, zebra finch and budgerigar.

The researchers also found that the fastest rate of change had occurred in the zebra finch and budgerigar, consistent with more rapid speciation events in songbirds and their relatives.

© Richard Conan-Davies 2017 | contact | permissions | privacy | site map |