1. Researchers in Massachusetts have cloned three goats. 2. He added, however, that cloning one goat would not be enough to get the species started again, since a male goat would be needed for mating. 3. In April, geneticists at Tufts University in Massachusetts cloned three goats. 4. Last April, Massachusetts researchers announced they had cloned three goats. |
每页显示:
共 4 句