Which type of chromosome abnormality is the most difficult?

What is the function of nucleic acids

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

What advantage does a crop that undergoes vegetative reproduction have over plants that start from the seed? 1points a they store nutrients. b they can travel farther. c they experience more genetic variation. d they only occur in high-resource environments.