Cotton Fiber Comparison (image) University of Texas at Austin Share Print E-Mail Caption Upland cotton (right) evolved from the hybridization of two ancestral species, one similar to G. raimondii (left) and one similar to G. arboreum (middle). Selection and domestication yielded longer, higher quality fibers than either ancestor. Credit Chen Laboratory/Univ. of Texas at Austin Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.