MISSION 5 — Fatal Fangs 

The more closely related two snakes are, the more similar their venoms tend to be. In some cases, the venoms are so similar that an antivenom for one will work on the other. In this level, an unknown three-foot-long snake just bit Tyler. If you can identify that snake’s closest relative, you can administer the right antivenom—before it’s too late.

Play "Fatal fangs" and answer questions 8–10 after you've completed the level.

8. Complete the character matrix below. Write down the correct nucleotides for the first two columns and place an "x" if the species possesses the trait in the two middle columns. Identify which antivenom to use in the last column.