2 The author uses a problem-and-solution text structure in the final
paragraph to communicate which of the following important ideas?
A Kate might have other genetic traits in common with her parents.
2200 watt
B Understanding how DNA works might help us take precautions
against some illnesses.
C If people learn they're prone to certain diseases, they can prepare
for the worst.
D Studying DNA can allow people to control the hair and eye color
of future generations.
