Which of these tools is used to transfer a gene into an animal?
a. molecular scissors
b. vector
c. ligase enzyme

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere

Which genetic disorders, caused by an extra x chromosome (xxy), is characterized by a lack of testicular development in males, effeminate features, possible mental impairment, and a thin stature?